2019 is almost over and Milky Way Galactic Core Season comes to an end during the week of Thanksgiving! It's time for ONE FINAL LIVE Milky Way Wednesday! Join me tonight at 7pm Mountain Time! 2020 Milky Way Photography Workshops: http://bit.ly/2ma2Uai Please check out my Milky Way Course: http://bit.ly/32kiz69 #MilkyWayPhotography #MilkyWayWednesday #Astrophotography Support us: https://www.patreon.com/photogadventures Thanks for watching and see you next time! WEBSITE: http://www.photogadventures.com/ ABOUT: http://www.photogadventures.com/about/ ************************************************************** Do you enjoy Photography Podcasts? Check out our Podcast where we talk more in detail about what went well and what could have gone better in each of our adventures : https://goo.gl/6T4oJG ************************************************************** If you are curious, below is a list of the gear we use. These are Amazon links, so if you were to buy anything from them it actually would help support Photog Adventures and we really appreciate it! Camera Gear: ------------------------------------------------------------------------------------------------ Canon 5D MKIII: https://goo.gl/PmrmKq Canon 70D: https://goo.gl/AcrCmq Canon 6D: https://goo.gl/97a0VJ Canon 17-35mm f2.8L: https://goo.gl/N7QUuu Tamron 15-30mm f2.8: https://goo.gl/dKzIBd SunwayFoto L Bracket: https://goo.gl/E3B4xS Manfrotto Junior 410 Geared Head: https://goo.gl/3VTViD Acratech GP Ballhead with Gimbal Feature: https://goo.gl/GltQvm Manfrotto Tripod Aluminum: https://goo.gl/5AuRcV Feisol Tournament CT-3442 Rapid: https://goo.gl/silJQV Mindshift Gear 180 Horizon: https://goo.gl/AZC3XA Canon Camera Bag: https://goo.gl/nXk9ON Astrophotography Gear: ------------------------------------------------------------------------------------------------ Boruit Rechargeable LED Headlamp RJ-3000: https://goo.gl/FVrQKt JClaw Tek LED Headlamp with Red Lights for Night: https://goo.gl/7bmz3l F&V Z96 UltraColor LED Light (Same as Aaron purchased but as of today, out of stock.) amzn.to/2oZGyHj In-Stock option for F&V HDV-Z96 II Z-flash LED Light amzn.to/2oZsm1d Larger Capacity Battery for F&V light amzn.to/2opJU86 YONGNUO YN300 Air LED Video Light: https://goo.gl/TewFMs Rokinon/Samyang 24mm F/1.4 Aspherical Wide Angle Lens: https://goo.gl/IeBdaR Vlogging Gear: ------------------------------------------------------------------------------------------------ GoPro HERO4 Session: https://goo.gl/fTGbYv GoPro Hero4 Silver: https://goo.gl/h0gSgd GoPro Hero4 Black: https://goo.gl/yZD5T3 Zoom H1 Portable Digital Recorder: https://goo.gl/RvKj5e Rode SmartLav+: https://goo.gl/7qwAh2 Tascam DR-60DmkII: https://goo.gl/5uklXJ Thank you for supporting us!

Royal Astronomical Society of Canada - Toronto Centre Recreational Astronomy Night November 13, 2019 Andy Beaton - The Sky This Month 9:31 Ed Treijs - A cruise and a collection of conjunctions 38:19 Jim Chung - Imaging emission nebulae from your backyard with your DSLR or mirrorless camera 1:19:51 Dr Ralph Chou - Announcements 1:33:39

The #DailySpace brings you the universe at 10am PST / 1pm EST / 5pm GMT on twitch.tv/CosmoQuestX.Annie goes over last weeks launches which include the second set of Starlink satellites, and two surprise Chinese launches that occurred just hours apart.  Plus an update on the Boeing parachute failure and some more details about the new Chinese gridfins. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

Witnesses: Lt. General Thomas P. Stafford, USAF (Ret.); Member, National Academy of Engineering; Chairman, NASA ISS Advisory Committee; Pilot, Gemini 6, Commander, Gemini 9; Cdr. Apollo 10, Cdr. Apollo/Apollo-Soyuz Test Program; Former USAF Deputy Chief of Staff for Research, Development and Acquisition Mr. A. Thomas Young, Former Director of NASA Goddard Space Flight Center, Former President and Chief Operating Officer Martin Marietta Corp

Today's guest is Dustin Gibson from Oceanside Photo and Telescope (OPT). Dustin will talk about his journey to becoming an astrophotographer and eventually running one of the most successful telescope retailers in the world. Follow Dustin on Instagram: https://www.instagram.com/gibsonpics/ Or visit Oceanside Photo and Telescope https://optcorp.com/

Watch a recording of our live stream of the transit of Mercury 2019 with spectacular telescope footage of Mercury, the first planet from the Sun, moving across the Sun's disk. https://www.timeanddate.com/eclipse/transit/2019-november-11 - Times, animations, and more about this transit https://www.timeanddate.com/eclipse/mercury-transit.html - What is a Mercury transit? https://www.timeanddate.com/eclipse/list-transit.html - List of upcoming planet transits With special thanks to: Griffith Observatory: http://www.griffithobservatory.org/events/Transit_of_Mercury_2019.html Royal Observatory Greenwich : https://www.rmg.co.uk/discover/explore/when-is-the-next-transit-of-mercury

The #DailySpace brings you the universe at 10am PST / 1pm EST / 5pm GMT on twitch.tv/CosmoQuestX. Today's news includes seeing the Sunburst Arc galaxy via gravitational lensing, a new computer model that has 20 billion particles representing the various types of matter in the universe, and a pulsar that is gravitationally stripping material off its neighbor star and igniting in a blast. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

The #DailySpace brings you the universe at 10am PST / 1pm EST / 5pm GMT on twitch.tv/CosmoQuestX.The TESS mission is following the tradition started by Kepler and finding us planets in places and orbits we never expected. In today’s episode we look at how TESS’s discovery of a Gas Giant in a highly elliptical orbit led to new models looking to imagine how a habitable world might exist in such a system, and what it would see. Beyond dreaming of other worlds skies, we will also talk Monday’s Mercury transit and other celestial events visible this month. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

We record the Weekly Space Hangout every Wednesday at 5:00 pm Pacific / 8:00 pm Eastern. You can watch us live on Universe Today or the Weekly Space Hangout YouTube page. "This week we welcome Tiera and Myron Fletcher, Aerospace Engineers with Boeing working on NASA's Space Launch System. Tiera is a Rocket Structural Analysis Engineer who graduated from MIT with a Bachelor's Degree in Aerospace Engineering. As a student, Tiera worked in the Man Vehicle Laboratory, the Gelb Laboratory, and the Space Systems Laboratory at MIT where she worked on defining rotations for astronauts in anti-gravity, completed structural analysis for an unmanned aerial vehicle, and did research to determine the outer protective layer material for Dava Newman’s BioSuit. During her Senior year at MIT, Tiera began her career as a part-time Rocket Structural Design and Analysis engineer. Myron graduated from Tuskegee University with Bachelors of Science Degrees in both Aerospace Science Engineering and Physics. He followed that up with a Masters of Science in Engineering Management from Duke University. As a student, Myron worked on the fabrication of carbon/epoxy, developed simulations to model solar sail trajectories and control systems for deep space missions, performed wind tunnel tests on how different shapes affected drag, studied development of a biodegradable rocket for a NASA standard payload, and researched and designed a useable UAV for scientific research. As a Rocket Design and Propulsion Engineer at Boeing, he has designed and developed key components of the Space Launch System, including the Debris Screen (aka “debris catcher,”) for the core stage propulsion team and the Propellant Feed Filter and Hydrazine Filter for the Exploration Upper Stage. In July 2017, Tiera and Myron were married at the U.S. Space and Rocket Center under the Saturn V that sent astronauts to the moon. Today, through their organization Rocket with the Fletchers they encourage people around the world not only to chase their dreams but to achieve them. Follow Tiera, Myron, and Rocket with the Fletchers: ► Facebook: https://www.facebook.com/TieraAndMyron/ ► Twitter: @TieraAndMyron ► Instagram: @rocketwiththefletchers" Want to support CosmoQuest? Here are specific ways you can help: Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx – follow and subscribe! Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA

In her Nov. 6 talk at Perimeter Institute, astrophysicist and author Elizabeth Tasker will take audiences for a speculative stroll through a few of the alien worlds we’ve discovered in the galaxy, and ponder whether someone else may already call them home.

We record the Weekly Space Hangout every Wednesday at 5:00 pm Pacific / 8:00 pm Eastern. You can watch us live on Universe Today or the Weekly Space Hangout YouTube page. "This week we welcome Dr. Rory Barnes to the Weekly Space Hangout. Rory is an assistant professor in the Department of Astronomy and Astrobiology Program at the University of Washington. He is also a member of NASA's Virtual Planetary Lab as well as the University of Washington's Big Data program. He studies the habitability of exoplanets with astrophysical, geophysical, and atmospheric computer models. In August 2019, Rory released VPLanet, an open source, virtual planet simulator that links physical processes together and enables phenomena from one region of a planetary system to be tracked throughout its entire system. Eventually, it is hoped that this will help determine if an exoplanet is capable of supporting life. VPLanet currently includes two modules which model the internal and magnetic evolution of terrestrial planets' characteristics. However, being open source and designed for easy growth, researchers are able to write additional physical modules which can be easily integrated with VPLanet in essentially a ""plug and play"" manner. To learn more about Rory, his research, and other projects, visit: https://faculty.washington.edu/rkb9/ To learn about the other programs and scripts Rory has written, visit: https://github.com/RoryBarnes To read all about VPLanet, visit https://phys.org/news/2019-09-vplanet-virtual-planet-simulator-distant.html The source code for VPLanet is available on GitHub: https://github.com/VirtualPlanetaryLaboratory/vplanet" Want to support CosmoQuest? Here are specific ways you can help: Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx – follow and subscribe! Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA

Unveiling the Cosmos: Key Inventions Behind the Modern Telescope Sarah Kendrew of the European Space Agency/STScI The astronomical telescope is a relatively recent invention in the ancient science of stargazing. Over the past 400 years, generation after generation of technology has transformed telescopes from passive observing tools to complex, highly automated workhorses of science. This astounding increase in sophistication has brought forth a golden age of astronomical discovery and ever-new insights into the nature of the universe and our place within it. Join Dr. Sarah Kendrew for an illustrated guide to the technological inventions that enabled this cosmic transformation. Host: Dr. Frank Summers of the Space Telescope Science Institute Recorded live on Tuesday, November 5, 2019, at the Space Telescope Science Institute in Baltimore, Maryland, U.S.A. More information: www.stsci.edu/public-lectures

Join Fraser Cain and Pamela Gay for a live episode of Astronomy Cast. We'll record our 30-minute show, and then stay tuned for them to answer questions! Once again, another place where the Universe is going to make this difficult for us. Proving, once and for all that there's alien life on another world. It should be straightforward, look for biosignatures, but it looks like there are natural sources that could explain almost any chemical we could hope to search for. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Subscribe to our YouTube channel at https://www.youtube.com/c/cosmoquest * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx * Help us find sponsors by sharing our program and fundraising efforts through your networks *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/ * A combination of the above!

The #DailySpace brings you the universe at 10am PST / 1pm EST / 5pm GMT on twitch.tv/CosmoQuestX. We are hitting the November doldrums, where faculty are giving and grading midterms, everyone is writing grants, and research is being held on to as we look ahead to the major conferences of December and January. This means our episodes are going to be a little different on slow news days, which is what today is, and we’re going to do deeper dives into specific problems. As we promised last week, today’s deep dive is going to be into the latest news on Pluto, New Horizons, and hopes for a future orbiter. -Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

Check out the live of our successful #Starliner Pad Abort Test at White Sands Missile Range in the New Mexico desert. We put the abort system to the test with the help of #NASA Commercial Crew and the U. S. Army. Once Starliner’s engines fired, the spacecraft got up to 650 miles per hour (1,046 km per hour) in about five seconds, proving this system can get crew away from a dangerous situation fast. What's Boeing's latest innovation? Subscribe to the Boeing YouTube Channel: https://www.youtube.com/boeing More great aviation videos: ►Boeing Starliner Engineer Gets Paid to Pretend She’s an Astronaut: https://www.youtube.com/watch?v=CFa36TqIS4c ►Boeing's Veteran Astronaut Trainer Gets the Starliner Astronauts Ready for an All-New Mission: https://www.youtube.com/watch?v=UFauUW6U288 ►Things Are Heating Up as Boeing Starliner Prepares for Launch: https://www.youtube.com/watch?v=NbUZLuGZlLo ►Go with the Boeing Starliner Landing Convoy Team on a Capsule Recovery Exercise: https://www.youtube.com/watch?v=86ccPc3CHck Our social media handles: ► Facebook: https://www.facebook.com/Boeing ► Twitter: https://twitter.com/BoeingSpace ► Instagram: https://www.instagram.com/boeing ► LinkedIn: https://www.linkedin.com/company/boeing ► Website: https://www.boeing.com

NASA and Boeing will broadcast live coverage of the CST-100 Starliner Pad Abort Test on Monday, Nov. 4, from Launch Complex 32 at White Sands Missile Range in New Mexico. The test is scheduled for 9 a.m. EST (7 a.m. MST) with a three-hour test window. Live coverage is targeted to start at 8:50 a.m., on NASA Television and the agency’s website. Coverage will be adjusted as necessary within the window. Boeing’s Pad Abort Test is part of NASA’s Commercial Crew Program work with the American aerospace industry -- through a public-private partnership -- to launch astronauts on American rockets and spacecraft from American soil for the first time since 2011. The goal of the program is to provide safe, reliable and cost-effective transportation to and from the International Space Station, which would allow for additional research time and increase the opportunity for discovery aboard humanity’s testbed for exploration. The test is designed to verify that each of Starliner’s systems will function not only separately, but in concert, to protect astronauts by carrying them safely away from the launch pad in the unlikely event of an emergency prior to liftoff. During the test, Starliner’s four launch abort engines and several orbital maneuvering and attitude control thrusters will fire, pushing the spacecraft approximately 1 mile above land and 1 mile north of the test stand. The spacecraft’s crew module will use parachutes with landing airbags to touch down at White Sands Missile Range. It will be recovered and brought back to Launch Complex 32 for evaluation and analysis. Thanks for watching - why not support this channel and help us grow. https://www.youtube.com/channel/UCakgsb0w7QB0VHdnCc-OVEA/join Subscribe For More Videos Like This: http://www.youtube.com/user/ouramazingspace?sub_confirmation=1 See my latest videos : https://www.youtube.com/user/ouramazingspace/videos Bringing you the BEST Space and Astronomy videos online. Showcasing videos and images from the likes of NASA,ESA,Hubble etc. Join me on Facebook: https://www.facebook.com/spaceisamazing Twitter: https://twitter.com/AmazingSpace2 Google+ : http://goo.gl/1WCBn9 Music by Keving Macleod http://incompetech.com/music/royalty-free/

Coverage of the Rendezvous and Capture of the Northrop Grumman NG-12 Cygnus Cargo Craft Thanks for watching - why not support this channel and help us grow. https://www.youtube.com/channel/UCakgsb0w7QB0VHdnCc-OVEA/join Subscribe For More Videos Like This: http://www.youtube.com/user/ouramazingspace?sub_confirmation=1 See my latest videos : https://www.youtube.com/user/ouramazingspace/videos Bringing you the BEST Space and Astronomy videos online. Showcasing videos and images from the likes of NASA,ESA,Hubble etc. Join me on Facebook: https://www.facebook.com/spaceisamazing Twitter: https://twitter.com/AmazingSpace2 Google+ : http://goo.gl/1WCBn9 Music by Keving Macleod http://incompetech.com/music/royalty-free/

We're joined by Dr Matt Richardson of U Tokyo/JAXA to talk reusable rocket engines. Matt recently graduated with a PhD in aerospace engineering where he tested ways to extend the lifetime and reduce refurbishment costs of liquid-fueled rocket engines. You can find Matt on twitter at @Mattgineer As always, you can help the shows of TMRO by becoming a Member at youtube.com/tmro/join

Watch NASA and Northrup Grumman launch an Antares rocket with a Cygnus resupply spacecraft to the International Space Station. There'll be 3,500 kg (7,720 lbs) launched inside the Cygnus Capsule. It's scheduled to lift off at 9:59:46 AM EDT (13:59:46UTC) from MARS LP-OA - Wallops, Virginia. ---------------------------- Want to support what I do? Consider becoming a Patreon supporter for access to exclusive livestreams, our discord channel and subreddit! - http://patreon.com/everydayastronaut The best place for all your space merch needs! https://everydayastronaut.com/shop/ All music is original! Check out my album "Maximum Aerodynamic Pressure" anywhere you listen to music (Spotify, iTunes, Google Play, Amazon, etc) or click here for easy links - http://everydayastronaut.com/music I'm the cohost of an awesome podcast where we talk all about current technologies and how they shape our future! http://ourludicrousfuture.com or here on YouTube https://www.youtube.com/ourludicrousfuture

On Sat., Nov. 2 at 9:59 a.m. EDT, Northrop Grumman's Antares rocket and Cygnus spacecraft launched from Wallops Flight Facility in Virginia on a cargo resupply mission to the International Space Station. Cygnus will deliver around 8,200 pounds of research, supplies, and hardware to the orbiting laboratory, including supplies for upcoming spacewalks and student CubeSats. Read more about the mission: https://www.nasa.gov/press-release/nasa-science-cargo-heads-to-space-station-on-northrop-grumman-mission/

Dr. Pat Slane, Assistant Director for Science at Chandra X-ray Center joins the All Space Considered team to celebrate 20 years of Chandra. Also on the agenda... Saturn Overtakes Jupiter in the Moon Race, Astronomy Takes the Prize, Pretty Pictures, the November Sky Report, and more! All Space Considered is Griffith Observatory’s live science program that is free and open to the public, held the first Friday of every month. Subscribe now for more All Space Considered clips: https://www.youtube.com/subscription_center?add_user=griffithobservatory Watch All Space Considered videos: https://www.youtube.com/griffithobservatory Learn more about All Space Considered on our official site: http://griffithobservatory.org/asc/all_space.html Follow All Space Considered on SOCIAL MEDIA: Twitter: https://twitter.com/allspacecnsdrd Facebook: https://www.facebook.com/AllSpaceConsidered/ Instagram: https://www.instagram.com/allspaceconsidered/ -Disclaimer- WE DO NOT OWN THE RIGHTS TO THE, VIDEOS, MUSICAL MATERIAL OR PICTURES PRESENT THAT WERE NOT CREATED DIRECTLY BY GRIFFITH OBSERVATORY OR ITS AFFILIATES, ALL CREDIT FOR THIS MATERIAL GOES TO THE ORIGINAL ARTISTS, CREATORS AND COMPOSERS. Fair Use: "Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use."

The #DailySpace brings you the universe at 10am PST / 1pm EST / 5pm GMT on twitch.tv/CosmoQuestX. In today's news we find stars started earlier than thought, stars then don't eat planets when expected, and put planets in places we never anticipated. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

Coverage of the release of the JAXA HTV-8 “Kounotori” from the International Space Station Thanks for watching - why not support this channel and help us grow. https://www.youtube.com/channel/UCakgsb0w7QB0VHdnCc-OVEA/join Subscribe For More Videos Like This: http://www.youtube.com/user/ouramazingspace?sub_confirmation=1 See my latest videos : https://www.youtube.com/user/ouramazingspace/videos Bringing you the BEST Space and Astronomy videos online. Showcasing videos and images from the likes of NASA,ESA,Hubble etc. Join me on Facebook: https://www.facebook.com/spaceisamazing Twitter: https://twitter.com/AmazingSpace2 Google+ : http://goo.gl/1WCBn9 Music by Keving Macleod http://incompetech.com/music/royalty-free/

JAXAは、こうのとり8号機（HTV8）がISSから分離する模様を中継いたします。 番組放送日　　 11月2日（土） 番組放送時間　1:50～2:30 分離予定日時　11月2日（土）　2:20頃 ※分離日時および放送時間はミッションの状況等により、変更になる場合がございます。 ※時刻は全て日本時間です。 「こうのとり」8号機紹介サイト http://iss.jaxa.jp/htv/mission/htv-8/ ファン！ファン！JAXA　特設サイト http://fanfun.jaxa.jp/countdown/htv8/

現在国際宇宙ステーション（ISS）へ向け飛行中の宇宙ステーション補給機「こうのとり」（HTV）8号機は、貨物搭載ラックや姿勢制御センサ等、新型宇宙ステーション補給機（HTV-X）に向けた実証も行っています。 HTV-9号機以降のISSへの補給を担うため、2021年度の打上げを目標に現在開発中のHTV-Xについて、以下のとおりご紹介する機会を設定いたします。 この記者勉強会の様子をライブ配信します。 記者勉強会資料： 新型宇宙ステーション補給機（HTV-X）（2019年10月31日版） https://fanfun.jaxa.jp/jaxatv/files/20191031_htv-x.pdf 日　　時：2019年10月31日（木）11：00～12：00 説明内容：HTV-X の開発計画および進捗状況について 　　　　　説明30分、質疑応答30分（予定） 説明者　：伊藤　徳政（いとう のりまさ） 　　　　　有人宇宙技術部門新型宇宙ステーション補給機プロジェクトチーム 　　　　　プロジェクトマネージャ

Lucianne Walkowicz is an astronomer who studies stellar magnetic activity and how stars influence a planet's suitability as a host for alien life. She is also an artist and works in a variety of media, from oil paint to sound.

Planck is an ESA satellite aimed at the observation of the Cosmic Microwave Background. The Planck collaboration has recently published its last legacy release. In this talk I will shortly review the main Planck results and their robustness, highlight some of the curious features present in the data and the Planck point of view on tensions with a few other astrophysical probes, notably with the Hubble constant measurements from local distance measurements.

Future in Space Hangouts are sponsored by the American Astronautical Society, consider becoming member: https://astronautical.org/member A critical part of NASA's plan to get to Mars and the Moon include the development and construction of a gateway that will support lunar and Mars exploration in the coming years. The technology and experience gained building and using the gateway will offer a major improvement to our current space capabilities. One crucial module on the gateway is the habitat that will house human beings. NASA contractor Northrop-Grumman is tasked with designing and building the gateway habitat, tune in for our discussion and learn about the capabilities and status of this important component of human space exploration. Like this content? Please consider becoming a patron: https://patreon.com/DeepAstronomy Follow DeepAstronomy on Twitter: @DeepAstronomy Join our free Discord server for always-on chat action! https://discord.gg/nqGpvtK

We record the Weekly Space Hangout every Wednesday at 5:00 pm Pacific / 8:00 pm Eastern. You can watch us live on Universe Today or the Weekly Space Hangout YouTube page. Tonight we welcome Evelyn MacDonald to the show in a PRERECORDED INTERVIEW with Fraser during which she discusses her thesis-turned-published-journal-article, something which rarely occurs. Evelyn MacDonald is a recent Physics graduate from McGill University. For her thesis, she mapped the Earth’s transit spectrum using data from the Atmospheric Chemistry Experiment (ACE). Using the Earth's spectrum as a ""fingerprint"" of sorts, Evelyn theorized that transit spectra of Earth-like exoplanets orbiting smaller stars could then be modeled as they would be observed by the James Webb Space Telescope. This would then allow scientists to recognize Earth-like atmospheric compositions based on the molecular features in an exoplanet’s transit spectrum. On August 28, 2019, with Evelyn listed as Lead Author and her advisor, Professor Nicolas Cowan as co-author, her thesis was published in the Monthly Notices of the Royal Astronomical Society, and can be read online here: https://academic.oup.com/mnras/article/489/1/196/5552693. You can learn more about Evelyn and her research here: https://reporter.mcgill.ca/student-project-could-help-astronomers-search-for-earth-like-planets/ Want to support CosmoQuest? Here are specific ways you can help: Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx – follow and subscribe! Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA

SUPER RARE LIVE CHINESE ROCKET LAUNCH! ~ Rocket Launch Live! ~ Coverage of the Kuaizhou-1A | Jilin-1-02A launch Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

It was another solo live QA this week and I did my best to answer as many audience questions as I could do, closing in on 60 questions during the hour. Needless to say it was a wide-ranging conversation with questions about where I think rovers should go, what do I think about time travel, and whether we should do more SETI or build more space telescopes. The thumbnail is for a Greenland rover called Grover. Here's an article about it: https://www.nasa.gov/topics/earth/features/grover.html 01:28 Updates 05:58 Has Canada got an exoplanet? 06:10 Thoughts on Hygiea? 07:00 Where would I send a rover? 07:79 Has NASA done sex studies in space? 08:05 How can black holes ever merge? 09:55 What does a rocket push against? 11:05 What do I think of metallic hydrogen? 12:50 What's my most memorable space event? 15:36 Have I seen any time travel videos? 16:00 Could Valles Marineris caused by a scraping asteroid 17:13 Why doesn't JWST's Ariane rocket have an abort system? 18:14 What would happen if a comet passed through the atmosphere? 18:39 Is Mercury tidally locked? 19:03 What will the do about food on Mars? 19:43 Do I believe in ancient aliens 19:56 How do we measure the expansion of the Universe? 21:18 Happy Halloween 21:39 What about Nibiru? 23:12 Do different worlds experience different time dilation? 24:50 Can you brew beer in microgravity? 25:20 Any relativistic calculators? 25:45 Could we see Earth in the past with a black hole? 27:45 Could we blow up asteroids? 29:00 Will SpaceX be violating the Outerspace Treaty? 31:29 Super spiral galaxies 32:35 Europa lander keep from getting fried 33:42 What do I read in my spare time? 35:05 Have they found the bolts in James Webb? 35:27 Are aliens too different? 37:00 Any breakthroughs in propulsion? 38:18 Did I see Halley's Comet? 38:30 Are there any bright comets coming? 39:37 How frequent were meteor impacts in the Late Heavy Bombardment? 40:15 Will the Moon landings actually happen? 41:30 Will there be version of Starship that could service satellites? 42:50 Space Telescopes versus SETI 43:55 Will CRISPR help modify humans to travel in space? 44:39 Collaboration with Joe Scott 45:00 Can we terraform Venus? 45:30 Live telescope streaming? 45:54 Upcoming astronomy events? 46:07 Why grow plants in regolith? 46:56 Why do we only see photons when they hit a thing? 48:04 Could we move a pole faster than the speed of light 48:55 Could they make an anti-asteroid version of Starship? 49:58 Where did Theia come from? 50:50 What if a star made a direct hit on a black hole? 51:37 Could we terraform Mars if we set up factories on it? 52:56 Is the Sun part of Alpha Centauri? 53:29 What does the X-37B 55:00 Does it make sense to send a new Voyager? 55:39 Could there be infinite Earths? 56:00 Most realistic space movie? 57:38 When will we live off fusion energy? 59:20 What's SpaceX's plan to get through the Van Allen Belts? 59:40 How did X-37B launch? Our Book is out! https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/ Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Weekly Space Hangout: https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/ Astronomy Cast: https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg Support us at: https://www.patreon.com/universetoday More stories at: https://www.universetoday.com/ Twitch: https://twitch.tv/fcain Follow us on Twitter: @universetoday Like us on Facebook: https://www.facebook.com/universetoday Instagram - https://instagram.com/universetoday Team: Fraser Cain - @fcain / [email protected] Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw Chad Weber - [email protected]

This week Kevin DeBruin, Author of 'To NASA and Beyond', talks about lessons from AeroCube-10, TeamXc at JPL and the use of CubeSats for outreach and education. Do you think CubeSats are the future of space exploration or are they better suited to education/student purposes?

The #DailySpace brings you the universe at 10am PST / 1pm EST / 5pm GMT on twitch.tv/CosmoQuestX. Today’s news is all over the place, and by place, we mean universe. We start with the story of 4 galaxy clusters merging, pair wise, into one massive system, and move on to explore a planet in a three-star system made of red dwarfs, and with a model for creating Jupiter family comets. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

The #DailySpace brings you the universe at 10am PST / 1pm EST / 5pm GMT on twitch.tv/CosmoQuestX. New data keeps showing new systems doing unexpected things. In today’s round-up of “that’s unexpected,” we confirm the universe isn’t expanding as expected, that galaxies formed in unexpected ways, and we find unexpected warm dust in a binary star system that may host colliding worlds. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

"Reality Check - Taking the Fiction Out of the Space Frontier" Speaker: Rick Tumlinson Founding Partner, SpaceFund Founder EarthLight Foundation Founder, Space Frontier Foundation From the 22nd Annual International Mars Society Convention, held at the University of Southern California from October 17-20, 2019. The four-day International Mars Society Convention brings together leading scientists, engineers, aerospace industry representatives, government policymakers and journalists to talk about the latest scientific discoveries, technological advances and political-economic developments that could help pave the way for a human mission to the planet Mars. Conference Papers and some presentations will be available on www.MarsPapers.org For more information on the Mars Society, visit our website at www.MarsSociety.org

The #DailySpace brings you the universe at 10am PST / 1pm EST / 5pm GMT on twitch.tv/CosmoQuestX. One of the things that makes planetary science so interesting is the regular changes we see in other worlds and our own. In this show, we look at weather on Saturn, a historic landing on Venus, and our own Earth’s impacts and quakes. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

The #DailySpace brings you the universe at 10am PST / 1pm EST / 5pm GMT on twitch.tv/CosmoQuestX. Got clear skies? Go out tonight and catch the Orionids Meteor shower, a storm of falling stars generated by Halley’s comet. Later this week, we’ll see aurora like those that will one day be predicted by the ESA Solar Probe. We also have an update on the Mars 2020 rover. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/

Join Fraser Cain and Pamela Gay for a live episode of Astronomy Cast. We'll record our 30-minute show, and then stay tuned for them to answer questions! Once again, another place where the Universe is going to make this difficult for us. Proving, once and for all that there's alien life on another world. It should be straightforward, look for biosignatures, but it looks like there are natural sources that could explain almost any chemical we could hope to search for. Want to support CosmoQuest? Here are specific ways you can help: * Subscribe to our podcasts Astronomy Cast and Daily Space where ever you get your podcasts! * Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx - follow and subscribe! * Subscribe to our YouTube channel at https://www.youtube.com/c/cosmoquest * Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx * Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast * Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA * Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx * Help us find sponsors by sharing our program and fundraising efforts through your networks *Join our Discord server for CosmoQuest - https://discord.gg/4g35wpW *Join the Weekly Space Hangout Crew! - http://www.wshcrew.space/ * A combination of the above!

NASA in Silicon Valley Live is a talk show that features conversations with scientists, researchers, engineers and all-around cool people who work at NASA to push the boundaries of innovation. In this episode streamed on Oct. 24, 2019, we host our second annual NASA-themed Halloween costume and cosplay contest! Video credit: NASA/Ames Research Center NASA's Ames Research Center is located in California's Silicon Valley. Follow us on social media to hear about the latest developments in space, science, technology and aeronautics. Facebook https://www.facebook.com/nasaames Twitter https://twitter.com/nasaames Instagram https://www.instagram.com/nasaames

Need a #NASACostume idea for Halloween? Join us at 7 p.m. EDT for a new episode of NASA in Silicon Valley Live to see some space-tacular outfits as we host our annual NASA-themed Halloween costume and cosplay contest!

We record the Weekly Space Hangout every Wednesday at 5:00 pm Pacific / 8:00 pm Eastern. You can watch us live on Universe Today or the Weekly Space Hangout YouTube page. Dr. R. Aileen Yingst is a Senior Scientist at the Planetary Science Institute, a research institution headquartered in Tucson, AZ. She is Principal Investigator for the Heimdall camera system being built for a future lunar mission, and Deputy Principal Investigator for the Mars Handlens Imager instrument on the Mars Science Laboratory rover Curiosity. She is also a Co-Investigator on the newly-funded Dragonfly mission, an associate on the Dawn at Ceres mission and most recently served as Associate Principal Investigator on the Mars Exploration Rover Mission. Other missions that Dr. Yingst has worked on include Dawn at Vesta, Mars Pathfinder, Mars Polar Lander, and Galileo. Dr. Yingst served as Director of the Wisconsin Space Grant Consortium for 14 years. Want to support CosmoQuest? Here are specific ways you can help: Subscribe FREE to our YouTube channel at https://www.youtube.com/c/cosmoquest Watch our streams over on Twitch at https://www.twitch.tv/cosmoquestx – follow and subscribe! Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast Become a Patreon of CosmoQuest https://www.patreon.com/cosmoquestx Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA

In a special public lecture webcast at Perimeter Institute on October 23, 2019, Gabriela González will provide a first-hand account of LIGO’s century-in-the-making breakthrough, and explain observations made as recently as this year. González, a professor of physics and astronomy at Louisiana State University and former spokesperson of the LIGO collaboration, will take the audience on a journey to some of the universe’s most violent places, and explain how such distant events can lead to a very bright future here on Earth. The Perimeter Institute Public Lecture Series is made possible in part by the support of donors like you. Be part of the equation: https://insidetheperimeter.ca/donate BMO Financial Group is a Supporting Partner of this talk.

Watch live as NASA's next rover, Mars 2020, is built and tested in the Spacecraft Assembly Facility at the agency's Jet Propulsion Laboratory in Pasadena, California. Live moderated chats will take place on this channel Monday through Thursday at 11 a.m. and 4 p.m. PT for 30 minutes. If you don't see the chat at those times, try refreshing your browser. For more about the mission, visit https://mars.nasa.gov/mars2020 All chats are moderated. Inappropriate language or posts that harass other individuals will be removed. - Use respectful language - Protect your private information - No spam, sexually explicit or discriminatory material - Stay on topic

In this week's live QA, we talked about rotating space stations, the materials that can be made in space, what telescopes and binoculars I use. And there were a lot of questions about James Webb. 04:15 When will we see a rotating space station? 09:27 Are there materials that can only be made in space? 11:11 What's my telescope? 12:51 What are my binoculars? 13:47 What's the status of the B612 Foundation? 15:16 Could we terraform Venus? 17:52 More on my binoculars 19:19 Should we build a sunshield to offset climate change? 21:43 If SLS is canceled, what happens? 26:42 What happens when there's no mass? 28:45 What are my hopes about James Webb? 31:47 Is there a finite amount of mass in the Universe? 32:07 Is there a backup James Webb? 33:45 How is time affected in zero mass? 34:15 Why launch James Webb from South America? 36:44 Borisov is coming through the ecliptic 37:37 Will LUVOIR get built? 40:35 Will James Webb find Planet X? 41:15 Is the Planetary Society a lobbiest organization? 44:20 Will we migrate to another planet? 49:36 Sea Dragon revisted? 50:47 Where would I go in the Universe? 55:46 Could we use asteroids for tourism? 58:15 What if Starship landed on Titan? Our Book is out! https://www.amazon.com/Universe-Today-Ultimate-Viewing-Cosmos/dp/1624145442/ Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Weekly Space Hangout: https://www.youtube.com/channel/UC0-KklSGlCiJDwOPdR2EUcg/ Astronomy Cast: https://www.youtube.com/channel/UCUHI67dh9jEO2rvK--MdCSg Support us at: https://www.patreon.com/universetoday More stories at: https://www.universetoday.com/ Twitch: https://twitch.tv/fcain Follow us on Twitter: @universetoday Like us on Facebook: https://www.facebook.com/universetoday Instagram - https://instagram.com/universetoday Team: Fraser Cain - @fcain / [email protected] Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw Chad Weber - [email protected]

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9:10～ 開会式 9:20～　パラシュート滞空時間競技 11:00～　高度競技 　　WSMC世界大会予選 15:00～　パラシュート定点着地競技 16:30～　表彰式 閉会式 【パラシュート滞空時間競技】 規定エンジンを用いパラシュート仕様の機体で滞空時間を競う 【パラシュート定点着地競技】 アルファーⅢ決められた発射地点から打上げ，中心までの距離を競う。 中心部から半径２０ｍ以内のみ計測。 【高度競技】 規定エンジンを用い，最高到達高度を競う 競技規則 http://www.ja-r.net/regulation1.html 競技種目 http://www.ja-r.net/regulation3.html 公式サイト　http://www.ja-r.net/rocketmeeting.html 【観覧申込み】現地観覧の申込みは締切りました ※天候や電波状況により予告なく放送を中止、中断する事があります ※天候状況により競技スケジュールを繰り上げ、繰り下げる場合があります

Nasa begins the first ever all-female spacewalk, sending two American astronauts out into the void to effect repairs to the International Space Station (ISS), following a power system failure at the laboratory high above Earth Subscribe to Guardian News on YouTube ► http://bit.ly/guardianwiressub Support the Guardian ► https://support.theguardian.com/contribute Today in Focus podcast ► https://www.theguardian.com/news/series/todayinfocus The Guardian YouTube network: The Guardian ► http://www.youtube.com/theguardian Owen Jones talks ► http://bit.ly/subsowenjones Guardian Football ► http://is.gd/guardianfootball Guardian Sport ► http://bit.ly/GDNsport Guardian Culture ► http://is.gd/guardianculture

On Friday, Oct. 18, NASA astronauts Christina Koch and Jessica Meir completed NASA's first all-woman spacewalk. During the 7-hour, 17-minute spacewalk, the pair replaced a failed power controller and completed several other tasks in preparation for future spacewalks. Learn more about spacewalks: https://www.nasa.gov/mission_pages/station/spacewalks/.

I will talk about recent work on the small bodies that orbit other stars. We see the dust produced in collisions between these bodies as debris disks, and the large bodies when their comae transit their host stars. A few comet transits have now been detected in broadband space-based photometry, and I will outline the first efforts towards these discoveries. These new detections are complimented by prior transient calcium absorption features, and I will show how the acceleration of these lines provides new constraints on the orbits of the transiting bodies around beta Pictoris. Finally, I will show some new detections of warm dust towards Sun-like stars, and discuss why these detections suggest comets as a probable dust source.