ORBITAL MECHANICS

GW Orionis system observations by the Very Large Telescope and the Atacama Large Millimeter/submillimeter Array (ALMA) have revealed that the stars "tear apart their planet-forming disc." according to the European Southern Observatory. See how the stars orbit and the evolution of the system in these animations. -- Scientists spot a triple-star system shredding its planet-forming disk in a cosmic first: https://www.space.com/gw-orionis-triple-star-system-tears-apart-disk.html Credit: Space.com / animations: ESO/Exeter/Kraus et al./L. Calçada / produced & edited by Steve Spaleta (http://www.twitter.com/stevespaleta)

Speaker: Dr. John Davies, FBIS Live Streamed Question and Answer Session (hosted by Alistair Scott) 7pm (BST) Wednesday 2nd September 2020 Dr John Davies will be available to answer questions on the subject of ‘Ever Decreasing Circles’ – An Introduction to Spacecraft Mission Orbits. John Davies is an astronomer at the UK Astronomy Technology Centre at the Royal Observatory Edinburgh. He has worked with several astronomical satellites, including the Infra-Red Astronomical Satellite (IRAS), and used many large ground-based telescopes for his research programme on comets and asteroids. John is the author of five books, including Astronomy from Space which reviews the design and operation of orbiting observatories. He joined the BIS in the early 1970s. If you wish to make a comment or ask a question, please e-mail: [email protected] and if possible, your question/comment will be put to the speaker during the Q&A session. Please be sure to include your name, and your location when submitting your question/comment. If you wish to watch this event after it finishes, please open the link: https://www.youtube.com/channel/UCM7jAxkaP9LKMM2C88xXHPg where a recording/s will be available

What do you do if you're a lonely planet looking for a new companion? Well you might use your gravity to catch yourself a tiny moon. That's what our Earth did with a small car-sized chunk of space rock called 2020 CD3 discovered by Kacper Wierzchos and Teddy Pruyne at the Catalina Sky Survey. Learn more: ASTEROIDS https://www.spacetv.net/asteroids/ THE MOON https://www.spacetv.net/the-moon/ PLANET EARTH https://www.spacetv.net/earth/ ORBITAL MECHANICS https://www.spacetv.net/orbital-mechanics-astrodynamics/ Sources: https://www.newscientist.com/article/2235427-earth-has-acquired-a-brand-new-moon-thats-about-the-size-of-a-car/ https://www.teslarati.com/meet-earths-newly-discovered-companion-a-mini-moon-named-2020-cd3/ https://www.smithsonianmag.com/smart-news/earths-new-minimoon-leaving-soon-180974334/ Credits: Kacper Wierzchoś - Twitter @WierzchosKacper European Southern Observatory (ESO) NASA NASA's Goddard Space Flight Center NASA/Dan Gallagher NASA Jet Propulsion Laboratory ESA Aleksandr Ivanov SPACETV.NET 2020

Go to https://NordVPN.com/SPACE to get 75% off a 3 year plan and use code SPACE to get an additional month for free. No planet’s trip around a star is exactly like the one before it, because solar systems aren't as static as they first appear. Even small nudges can add up to disaster, but some objects find safe orbits with the help of a partner or two. Hosted by: Reid Reimers SciShow has a spinoff podcast! It's called SciShow Tangents. Check it out at https://www.scishowtangents.org ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Bill & Katie Scholl, Adam Brainard, Greg, Alex Hackman, Andrew Finley Brenan, Sam Lutfi, D.A. Noe, الخليفي سلطان, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Patrick D. Ashmore, charles george, Kevin Bealer, Chris Peters ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ---------- Sources: Sarah Millholland (https://campuspress.yale.edu/smillholland/publications/) Rick Pogge (https://astronomy.osu.edu/people/pogge.1) https://iopscience.iop.org/article/10.1088/0004-6256/150/3/73/pdf https://www.scientificamerican.com/article/orbital-forensics-hint-at-suns-long-lost-planet/ https://arxiv.org/pdf/1109.2949.pdf https://www.scientificamerican.com/article/jupiter-destroyer-of-worlds-may-have-paved-the-way-for-earth/ https://arxiv.org/pdf/1503.06945.pdf https://history.nasa.gov/SP-345/ch8.htm http://www2.ess.ucla.edu/~jewitt/kb/migrate.html http://www.openexoplanetcatalogue.com/systems/?fields=radiusEarth&fields=namelink&fields=numberofstars&fields=numberofplanets&fields=massEarth&fields=mass&fields=radius&filters=multiplanet http://adsbit.harvard.edu/cgi-bin/nph-iarticle_query?1994A%26A...287L...9L&defaultprint=YES&filetype=.pdf https://www.universetoday.com/118421/how-do-planets-go-rogue/ https://www.lpl.arizona.edu/~renu/malhotra_preprints/1999-sciam.pdf http://www.astro.caltech.edu/~george/ay20/Ay20-Lec14x.pdf http://www.mpia.de/homes/mordasini/slidesws1123/L14migration.pdf https://www.nsf.gov/news/mmg/mmg_disp.jsp?med_id=72264&from= https://arxiv.org/pdf/1410.2478.pdf https://www.teachastronomy.com/textbook/The-Giant-Planets-and-Their-Moons/Resonance-and-Harmonics/ https://arxiv.org/pdf/1702.02494.pdf http://hosting.astro.cornell.edu/academics/courses/astro6570/orbital_resonances.pdf https://www.space.com/37176-trappist-1-planets-resonance-musical-harmony-video.html Images: https://commons.wikimedia.org/wiki/File:A_Distant_Planetary_System.jpg https://commons.wikimedia.org/wiki/File:Galilean_moon_Laplace_resonance_animation_2.gif https://commons.wikimedia.org/wiki/File:Jupiter_and_the_Galilean_Satellites.jpg https://photojournal.jpl.nasa.gov/catalog/PIA14943 https://photojournal.jpl.nasa.gov/catalog/PIA06939 https://www.asteroidmission.org/bennu-rotation_20181102/

In this week's QA, I answer if Opportunity could ever phone home, are there stars between galaxies, and who, exactly, is Chad? Featuring a special guest answer from Dr. Becky. Check out Dr. Becky's channel at: https://www.youtube.com/channel/UCYNbYGl89UUowy8oXkipC-Q 01:45 What if Opportunity phoned home? 03:11 Stars between galaxies? 04:39 Who is Chad? 05:28 Why can't we calculate the size of the Universe? 08:28 Least toxic comment section 09:15 Where does the Solar System rotation come from? 11:00 Did Panspermia happen multiple times? 12:55 Could a black hole form from molecule collisions? 15:24 What would it take to repair Opportunity? 17:26 Why can't we accelerate for 1G? Reference: https://www.quora.com/What-is-the-maximum-speed-a-chemical-rocket-can-achieve 19:28 Is Oumuamua a Von Neumann probe? 21:18 Is there anything that doesn't orbit anything? 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: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Twitch: https://twitch.tv/fcain Follow us on Twitter: @universetoday Like us on Facebook: https://www.facebook.com/universetoday Google+ - https://plus.google.com/+universetoday/ Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain / [email protected] Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw Chad Weber - [email protected]

Johannes Kepler was born on December 27, 1571, in Weil der Stadt, Württemberg, in the Holy Roman Empire of German Nationality. Kepler moved to Prague to work with the renowned Danish astronomer, Tycho Brahe. He inherited Tycho's post as Imperial Mathematician when Tycho died in 1601. Using the precise data that Tycho had collected, Kepler discovered that the orbit of Mars was an ellipse. In 1609 he published Astronomia Nova, delineating his discoveries, which are now called Kepler's first two laws of planetary motion. Kepler noticed that an imaginary line drawn from a planet to the Sun swept out an equal area of space in equal times, regardless of where the planet was in its orbit. If you draw a triangle out from the Sun to a planet’s position at one point in time and its position at a fixed time later, the area of that triangle is always the same, anywhere in the orbit. For all these triangles to have the same area, the planet must move more quickly when it is near the Sun, but more slowly when it is farthest from the Sun. This discovery (which became Kepler’s second law of orbital motion) led to the realization of what became Kepler’s first law: that the planets move in an ellipse (a squashed circle) with the Sun at one focus point, offset from the center. In 1619 he published Harmonices Mundi, in which he describes his "third law." Kepler’s third law shows that there is a precise mathematical relationship between a planet’s distance from the Sun and the amount of time it takes revolve around the Sun. Kepler’s laws of planetary motion can also be used to describe the motion of satellites in orbit around Earth. This visualization introduces Kepler’s three laws of planetary motion using satellites in orbit around Earth. Several satellite orbits of varying characteristics are examined to see how Kepler’s laws apply. This version includes titles and labels. Visualizers: Kel Elkins (lead), Horace Mitchell For more information or to download this public domain video, go to https://svs.gsfc.nasa.gov/4642#25417

Check out our Patreon page: https://www.patreon.com/teded View full lesson: https://ed.ted.com/lessons/how-far-would-you-have-to-go-to-escape-gravity-rene-laufer Every star, black hole, human being, smartphone and atom are all constantly pulling on each other due to one force: gravity. So why don’t we feel pulled in billions of different directions? And is there anywhere in the universe where we'd be free of its pull? Rene Laufer details the inescapability of gravity. Lesson by Rene Laufer, directed by TED-Ed. Thank you so much to our patrons for your support! Without you this video would not be possible! rakesh Katragadda, Sergi Páez, Jørgen Østerpart, Cindy O., Nicu Boanda, Reagen O'Connor, Sabrina Gonzalez, Dino , Hadi Salahshour, Clement , Nick Debenedictis, Abdullah Altuwaijri, Jessie McGuire, Divina Grace Dar Santos, Brian Richards, Farah Abdelwahab, Mikhail Shkirev, Malcolm Callis, David Matthew Ezroj, Ever Granada, fatima kried, Begum Tutuncu, Lala Arguelles, Mehmet Sencer KARADAYI, Christian Kurch, SungGyeong Bae, Luis Felipe Ruiz Langenscheidt, Joe Huang, Rohan Gupta, Senjo Limbu, Martin Lau, Robson Martinho, Cailin Ramsey, Aaron Henson, John Saveland, Nicolle Fieldsend-Roxborough, ReuniteKorea, Venkat Venkatakrishnan, QIUJING L BU, Yoga Trapeze Wanderlust, Jaron Blackburn, Alejandro Cachoua, Thomas Mungavan, Edla Paniguel, Anna-Pitschna Kunz, Tim Armstrong, Erika Blanquez, Ricki Daniel Marbun, zjweele13 and Judith Benavides.

I break down the nature of Lagrange Points, and their applications in Sci-Fi. THE SOJOURN - AN ORIGINAL SCI-FI DRAMA: https://www.youtube.com/watch?v=I7CFTOzxsK4 SUPPORT SPACEDOCK: https://www.patreon.com/officialspacedock?ty=h FACEBOOK: https://www.facebook.com/officialspacedock/?pnref=lhc TWITTER: https://twitter.com/SpacedockHQ TWITCH: https://www.twitch.tv/spacedockhq REDDIT: https://www.reddit.com/r/officialspacedock/ SPACEDOCK MERCHANDISE: http://www.redbubble.com/people/spacedock/shop?asc=u Do not contact regarding network proposals. Battlezone II Music by Carey Chico Sci-Tech Intro Features Animated Elements by SKIBBZ. Spacedock does not hold ownership of the copyrighted materiel (Footage, Stills etc) taken from the various works of fiction covered in this series, and uses them within the boundaries of Fair Use for the purpose of Analysis, Discussion and Review.

How do you design the trajectory of a mission to the touch the sun? Johns Hopkins APL's Yanping Guo, mission design and navigation manager, explains how the alignment of the planets led to the creation of the best route for NASA's Parker Solar Probe. Learn more: https://www.nasa.gov/content/goddard/parker-solar-probe http://parkersolarprobe.jhuapl.edu/

Jen Krupp, ULA flight design engineer for the InSight mission to Mars, talks about working on the first interplanetary mission to launch from the West Coast of the U.S.

https://brilliant.org/curiousdroid/ How do spacecraft navigate in space over billions of kilometers and with split second timing during missions that last for years or decades. Here we look at how its done and the underlying principles that make it all possible. Sponsored by Brilliant.org Presented by Paul Shillito Written and Researched by Paul Shillito Images and Footage NASA, ESA, MIT, SolarSystemVideos Music by Response Data by P C III is licensed under a Attribution License. Based on a work at www.pipechoir.com source : http://freemusicarchive.org/music/P_C_III/Response_Data_1945/Response_Data

In orbital mechanics and aerospace engineering, a gravitational slingshot, gravity assist maneuver, or swing-by is the use of the relative movement and gravity of a planet or other astronomical object to alter the path and speed of a spacecraft, typically to save propellant, time, and expense. Gravity assistance can be used to accelerate a spacecraft, that is, to increase or decrease its speed or redirect its path. Credit: CSA Follow Us: Facebook: https://goo.gl/QapZAe Twitter: https://goo.gl/RoQSmJ #DeepSpaceTV #CanadaSpaceAgency #GravityAssist

2017-09-21 - Did you know that a spacecraft can use a planet’s gravity to change its orbit? For example, on September 22, 2017, the OSIRIS-REx spacecraft will use Earth’s gravity to change its orbit and help put it on course to asteroid Bennu, its target destination. With the help of this gravity assist, OSIRIS-REx is due to arrive at the asteroid in August 2018. Learn more about the OSIRIS-REx asteroid-sample return mission: http://asc-csa.gc.ca/eng/satellites/osiris-rex. (Credit: Canadian Space Agency) Useful Links The OSIRIS-REx asteroid sample-return mission: http://www.asc-csa.gc.ca/eng/satellites/osiris-rex/ Find out more about this video: http://www.asc-csa.gc.ca/eng/search/video/watch.asp?v=1_eoxgd0cn

A short animation showcasing how a circular orbit is projected as a wave on a flat map. I used a less polished version of this video in my recent kNews Space episode (https://www.youtube.com/watch?v=Y0yC1TtNXdo) and I also posted it on Reddit, where many came up with some really constructive feedback to make it better.

NASA's Cassini spacecraft, in orbit around Saturn for nearly 13 years, is beginning its Grand Finale — and it's thanks to some Crazy Engineering! A team of engineers called astrodynamicists used math and physics to plot a course for the hardy spacecraft that would send it on a series of dives through the gap between Saturn and its famous rings. And as always, the efforts of these engineers are helping to enable some truly thrilling exploration and scientific discovery. More information about Cassini's Grand Finale is available at https://saturn.jpl.nasa.gov/grandfinale

This animation shows the proposed trajectory of ESA’s Jupiter Icy Moons Explore (Juice) mission to Jupiter. Based on a launch in June 2022, the spacecraft will make a series of gravity-assist flybys at Earth (May 2023, September 2024 and November 2026), Venus (October 2023) and Mars (February 2025) before arriving in the Jupiter system in October 2029. The animation ends at the Jupiter orbit insertion point, but the planned 3.5 year mission will see Juice not only orbit Jupiter, but also make dedicated flybys of the moons Europa, Callisto and Ganymede, before orbiting the largest moon, Ganymede. More about Juice: http://sci.esa.int/juice/

Video captured in game using Universe Sandbox 2 Game website http://universesandbox.com/ Steam http://store.steampowered.com/app/230290/ WHAT IF OUR MOON HAD A MOON || universe sandbox² •• become a patron https://www.patreon.com/IrishTrekkie --- https://twitter.com/IDShenanigames 2nd channel --- https://www.youtube.com/IrishTrekkie intro - outro 8-Bit March by Twin Musicom is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Artist: http://www.twinmusicom.org

The space station masses over 400 tons, so can an astronaut orbit this? And what does this question have to do with supernova? We can use Universe Sandbox 2 to simulate how the forces of gravity work down to small scales, but also how they interact in more complcated ways than most people imagine. http://universesandbox.com/

Follow me on Twitter: https://twitter.com/HellstormDe There hasn't been an update for a long time - but now there is it. This time I'm using the Bullet Plugin for dynamics simulation. Because neither Maya's nParticles nor the Bullet Plugin itself support real gravity I had to write my own per-frame-script to simulate gravity. The script calculates the gravitational force between each rigid body and then adds this force to the acceleration vector of the rigid body. The initial asteroid belt is also created by a self-written script. It creates instances from a set of predefined shapes and gives them a random initial speed, rotation, mass and size. This time I've did the simulation with 4000 rigid body. The simulation ran at a speed of ~ 0.2 frames per second on an Intel Xeon E3-1231. The length of the simulation was 400 frames and afterwards I stretched it to 1200 frames. For the final test I want to do a simulation with 10.000 rigid bodies. The background is a 32000x16000 texture showing the calculated sky/milky way from the Tycho 2 star catalogue. I've created it also using a self-written program which parses the catalog data and adds the real color temperature to each star.

Visit http://julialang.org/ to download Julia.