on November 6, 2016
Take a facts-based journey through the cosmos with hosts Fraser Cain & Pamela Gay . Learn not just what we know but how we know it. Watch live on YouTube .
Related channels: UNIVERSE TODAY
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Astronomy Cast Ep. 518: When the Universe tried to Declare War
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!
We always say the Universe is trying to kill us. But there was this one time, when the Universe used our own fear of nuclear attack against us, nearly setting off a global nuclear war. Nice try Universe, we're on to you now.
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* Help us find sponsors by sharing our program and fundraising efforts through your networks
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* A combination of the above!
Astronomy Cast Ep. 517: Fritz Zwicky and the Zwicky Transient Facility
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!
One of the most influential astronomers in the 20th Century was Fritz Zwicky. He had his hand in the discovery of dark matter, gravitational lensing, supernovae and neutron stars. And he also worked on a few more controversial ideas like, uh, tired light. Let's learn more about Zwicky.
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Astronomy Cast Ep. 516: Polar Vortices
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!
It's cold right now. Okay, fine, here on Vancouver Island, it's actually pretty warm. But for the rest of Canada and big parts of the US, it's terrifyingly cold. Colder than Mars or the North Pole cold. This is all thanks to the break up of the polar vortex. What are polar vertices, how do they form, and where else to we find them in the Solar System?
Want to support CosmoQuest? Here are specific ways you can help:
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Astronomy Cast Ep. 515: Space Radiation
Space is a hostile environment in so many ways. But one of its worst features is the various kinds of radiation you can find. When astronauts go back beyond the protective environment of the Earth's magnetosphere, what are the various kinds of radiation they'll encounter. And is there anything we'll be able to do about it?
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!
Want to support CosmoQuest? Here are specific ways you can help:
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Astronomy Cast Ep. 514: Planetary Protection Protocols
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!
As we send rovers and landers to other worlds, we have to think about the tiny microbial astronauts we're sending along with us. In fact, NASA is so concerned about infecting other worlds that it has established the planetary protection protocols. Just to be safe.
Want to support CosmoQuest? Here are specific ways you can help:
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* Help us find sponsors by sharing our program and fundraising efforts through your networks
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Astronomy Cast Ep. 513: Stellar Fusion
The Sun. It's a big ball of fire, right? Apparently not. In fact, what's going on inside of the Sun took us some time and knowledge of physics to finally figure out: stellar fusion. Let's talk about the different kinds of fusion, and how we're trying to adapt it to generate power here on Earth.
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!
Want to support CosmoQuest? Here are specific ways you can help:
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* Help us find sponsors by sharing our program and fundraising efforts through your networks
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* Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA
* A combination of the above!
Astronomy Cast Ep. 512: Direct Imaging of Exoplanets
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!
Finding planets is old news, we now know of thousands and thousands of the places. But the terrible irony is that we can only see a fraction of the planets out there using the traditional methods of radial velocity and transits. But the new telescopes will take things to the next level and image planets directly.
Want to support CosmoQuest? Here are specific ways you can help:
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* Help us find sponsors by sharing our program and fundraising efforts through your networks
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* A combination of the above!
Astronomy Cast Ep. 511: Predictions for 2019
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!
We did it, we made it through 2018 in space. Now let's look forward to the incredible launches, discoveries and astronomical events happening in 2019.
Want to support CosmoQuest? Here are specific ways you can help:
* Donate and challenge your friends to donate too! https://tiltify.com/+cosmoquest-supporters/hangoutathon2018
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* 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
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* Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA
* A combination of the above!
Astronomy Cast Ep. 510: 2018 - Year in Review
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!
2018 was an incredible year in space news. Rockets launched, landers landed, spacecraft were born and died. We learned tremendous new things about Universe around us, and today we're here to look back fondly over the last 12 months to review the year in space that was.
Want to support CosmoQuest? Here are specific ways you can help:
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* Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx
* Volunteer for our Hangout-a-thon either to promote, provide a
giveaway, or to come on as a guest https://goo.gl/forms/XSm1yi0PKOM166m12
* Help us find sponsors by sharing our program and fundraising efforts through your networks
* Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast
* Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA
* A combination of the above!
Astronomy Cast Ep. 509: Fiction to Fact: 3D Printers
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!
The technology of 3D printing is taking off. From tiny home-based 3D printers to larger manufacturing. And of course, 3D printing is going to space with the International Space Station and beyond.
Want to support CosmoQuest? Here are specific ways you can help:
* Donate and challenge your friends to donate too! https://tiltify.com/+cosmoquest-supporters/hangoutathon2018
* Donate! (Streamlabs link) https://streamlabs.com/cosmoquestx
* Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx
* Volunteer for our Hangout-a-thon either to promote, provide a
giveaway, or to come on as a guest https://goo.gl/forms/XSm1yi0PKOM166m12
* Help us find sponsors by sharing our program and fundraising efforts through your networks
* Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast
* Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA
* A combination of the above!
Astronomy Cast Ep. 508: 2018 Holiday Gift Guide
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!
We did it, we made it to the end of another year. Once again it's time to wonder what gifts to get your beloved space nerds. We've got some suggestions. Some are brand new this year, others are classics that we just can't help but continue to suggest. Let's get into it.
Want to support CosmoQuest? Here are specific ways you can help:
Donate! (Streamlabs link) https://streamlabs.com/cosmoquestx
Buy stuff from our Redbubble https://www.redbubble.com/people/cosmoquestx
Volunteer for our Hangout-a-thon
either to promote, provide a giveaway, or to come on as a guest https://goo.gl/forms/XSm1yi0PKOM166m12
Help us find sponsors by sharing our program and fundraising efforts through your networks
Become a Patreon of Astronomy Cast https://www.patreon.com/astronomycast
Sponsor 365 Days of Astronomy http://bit.ly/sponsor365DoA
A combination of the above!
Astronomy Cast Ep. 507: From Fiction to Fact : Ion Drive
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!
Ion engines are a mainstay of science fiction, featured in both Star Trek and Wars. But this is a very real technology, successfully used on several missions out there in the Solar System right now. How do they work and what are the limits?
Astronomy Cast Ep. 506: It's not Aliens, Unless it's Aliens
Did you hear that astronomers from Harvard think that the interstellar asteroid Oumuamua was actually an alien solar sail? Is it aliens? Of course it's not aliens. But some day, it'll actually be aliens.
Fraser Cain and Pamela Gay recorded this together without a live video. So this episode, we only have audio. But check out our channel for our normal Astronomy Cast episodes, live on Fridays!
Astronomy Cast Ep. 505: Seismology
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!
We're always interested in the surface features of the planets and moons in the Solar System, but that's only skin deep. It turns out, these worlds have an interesting inner life too. Thanks to the science of seismology, we can peer into our planet and learn how it works... inside. And we're about to take that technology to Mars.
Astronomy Cast Ep. 504: Radar, Lidar & Sonar
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!
To really study something, you want to reach out and touch it. But what can you do if you're separated by a huge distance? You reach out with electromagnetic or sound waves and watch how they bounce back. Thanks to radar, sonar and lidar.
Astronomy Cast Ep. 503: Gravity Mapping
The Earth looks like a perfect sphere, but down here on the surface we see that there are mountains, rivers, oceans, glaciers, all kinds of features with different densities and shapes. Scientists can map this produce a highly detailed gravity map of our planet. And it turns out, this is very useful for other worlds too.
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!
Astronomy Cast Ep. 502: No Touching: Determining Composition of Worlds Remotely
How do you know what something is made of if you can't reach out and touch it? How do we know what planets lights years away have in their atmosphere? What about the rocks all around Curiosity? Or the geysers coming out of Europa and Enceladus? Scientists have a few handy tricks.
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!
Astronomy Cast Ep. 501: Water Worlds Revisited
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!
We're not learning that the vast majority of potentially habitable worlds out there are actually icy moons like Europa and Enceladus. Good news, there are hundreds, if not thousands of times more of them than worlds like Earth. Bad news, they're locked in ice. What have we learned about water worlds and their potential for habitability?
Astronomy Cast Ep. 500: Live Celebration!
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!
Welcome to episode 500 of Astronomy Cast. To celebrate this momentous occasion, we're going to look back 500 years into the past to see what we learned about the Universe. And then we're going to look 500 years into the future.
Astronomy Cast celebrated their 500th episode on Sept 15-16, 2018. We broadcast from our celebration, in front of a live audience! And we debuted our new theme music by composer, fan and friend David Joseph Wesley!
Astronomy Cast Ep. 500: Preshow
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!
We're celebrating over 11 years of Astronomy Cast with this special recording of our 500th episode in front of a live audience in Edwardsville, IL - home of CosmoQuest!
Astronomy Cast Ep. 499: What is the proposed Hubble-Lemaitre Law?
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!
We started out Astronomy Cast with the controversal decision to de-planet Pluto. And here we are, more than a decade later, at the brink of recording our 500th episode when another big decision is coming down from the IAU: whose name goes on the concept that our Universe is expanding: Hubble or Lemaître ? It's a big deal and Pamela knows all about it.
Astronomy Cast Ep. 498: Dwarf Galaxy Update
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!
The Milky Way has gobbled up dozens of dwarf galaxies and added them to its structure. Today we're going to look at the ongoing hunt for the wreckage of past mergers. And what we've discovered about dwarf galaxies in general.
Astronomy Cast Ep. 497: Update on Globular Clusters
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!
Is it globular clusters or is it globeular clusters? It doesn't matter, they're awesome and we're here to update you on them.
Astronomy Cast Ep. 496: Update on Stellar Populations (I, II, & III)
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!
Another update show, this time on the various generations of stars, let's get into it.
Astronomy Cast Ep. 495: Update on Asteroids & Prospects of Asteroid Mining
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!
Our knowledge of space is starting to match up with our ability to get out there an explore it. There are several companies working on missions and techniques to harvest minerals from asteroids. What other resources are out there that we can use?
Astronomy Cast Ep. 494: Icy Moons Update 2018
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!
Thanks to Cassini and other spacecraft, we've learned a tremendous amount about the icy worlds in the Solar System, from Jupiter's Europa to Saturn's Enceladus, to Pluto's Charon. Geysers, food for bacteria, potential oceans under the ice and more. What new things have we learned about these places?
Astronomy Cast Ep. 493: Mars Update 2018
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!
If there's one place we've learned more about in the last 10 years, it's Mars. Thanks to all those rovers, orbiters, landers which are flying overhead, crawling around the surface, and digging into the rich Martian regolith. What have we learned about Elon Musk's future home?
Astronomy Cast Ep. 492: Comets, Asteroids and KBO's
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!
Another topic with plenty of updates. Since we started Astronomy Cast we've visited many smaller objects in the Solar System up close, from Ceres and Vesta to Pluto, not to mention a comet. What have we learned?
Astronomy Cast Ep. 491: Exoplanet Update 2018
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!
Finally, a big update. Have there been news in the realm of exoplanets? More news that we can possibly cover. But we'll try our best.
Astronomy Cast Special: Q & A with Dr. Pamela Gay
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!
Astronomy Cast Ep. 490: What's New with Supernovae
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!
Time for another update, this time we're going to look at what's new with supernovae. And once again, we've got good news, lots of new stuff to report.
Astronomy Cast 489: Black Hole Update
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!
Another update episode, this time we look at what's new and changed in the research of black holes. And it's here that we find a lot of substantial new discoveries in the field, so much has been discovered since we first covered black holes a decade ago.
Astronomy Cast 488: Dark Energy, 2018 Edition
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!
The updates continue. Last week we talked about dark matter, and this week we continue with its partner dark energy. Of course, they're not really partners, unless you consider mysteriousness to be an attribute. Dark energy, that force that's accelerating the expansion of the Universe. What have we learned?
Astronomy Cast 487: Dark Matter, 2018 Edition
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!
Last week, we gave you an update in particle physics. This week it's time to see what's new in the world of dark matter. Spoiler alert, we still have no idea what it is, but maybe a few more ideas for what it isn't
Astronomy Cast 486: Particle Physics Update
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!
It's time for a news update. This time from the field of particle physics. It turns out there have been all kinds of new and interesting particles discovered by the Large Hadron Collider and others. Let's get an update from Pamela.
Astronomy Cast 485: Docking, Refueling, Transferring
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!
It's one thing to get to space. But once you've made it there, what do you want to do? You'll probably want to dock with another space ship, deliver cargo, refuel. Today we'll talk about how all that happens.
Astronomy Cast 484: Transfer Orbits and Gravitational Assists
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!
If you want to get around in the Solar System, you'll want to take advantage of natural gravitational speed boosts and transfer orbits. Whether you're heading to the outer Solar System or you want to visit the Sun itself, the planets themselves can help you in your journey.
Astronomy Cast 483: Stopping in 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!
It's one thing to get from Earth to space, but sometimes you want to do the opposite. You want to get into orbit or touch down gently on the surface of a planet and explore it. How do spacecraft stop? And what does that even mean when everything is orbiting?
Astronomy Cast 482: Alternative Ways to 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!
Getting to space is all about rockets, but people are trying to figure out other methods that could carry payloads to orbit and beyond. Railguns, airplanes, tethers and more. Today we'll talk about alternative methods of spaceflight.
Astronomy Cast 481: Rockets pt. 3 - Going Faster, Higher, Farther after Fairing Separation
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!
We've seen rockets blast off from here on Earth. But that's only half the story. Rockets have additional stages to push them into trajectories, like transfer orbits and various orbital maneuvers. Let's talk about what happens after the rocket is long gone, beyond our sight.
Astronomy Cast 480: Rockets pt. 2 - Multi-stage Boosters
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!
The vast majority of rockets are multi-staged affairs. Why is this? What makes this kind of rocket so successful? Today we look at the ins and outs of multi-stage rockets.
Astronomy Cast 479: Rockets pt. 1 - What Does "Single Stage To Orbit" Really Mean?
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!
To celebrate the launch of the Falcon Heavy, we figured it was time for an all new series, this time on the rockets that carry us to space. Today we're going to talk about why single stage to orbit rockets are so difficult to carry out.
Astronomy Cast Special: Q & A with Dr. Pamela Gay
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!
Astronomy Cast Ep. 478: Apollo 8 with Paul Hildebrandt
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!
Astronomy Cast Ep. 477: State of Exploration: Once and Future Moon
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!
Astronomy Cast Ep. 475: Fast Radio Bursts
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!
You know what's fun? Mysteries. Here's one: fast radio bursts. Astronomers have been detecting mysterious one-time signals from across the sky. What's causing them? Nobody knows for sure, but the search is on to get to the bottom of them.
Astronomy Cast Ep. 474: Predictions for 2018
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!
Phew, 2018, time to press the reset button and enjoy a whole new year of space exploration and space science. What's coming up this year? What should we expect to launch, and what will we see in the sky?
Astronomy Cast Ep. 473: Remembering the Best Space Science of 2017
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!
2017 was a crazy year for, well, you know. But, it was a great year for space science, a kilonova, extrasolar planets, reusable rockets and more. Let's look back at the year that was and remember our favorite space science.
Astronomy Cast Ep. 472: Best Modern Sci Fi for the Science Lover - Part 4: Bioscience
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!
What happens when the future meets biology? Bioscience science fiction, of course. And that's our focus today as we continue our journey though science-based science fiction.
Astronomy Cast Ep. 471: Best Modern Sci Fi for the Science Lover - Part 3: Human Computer Relations
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!
It's time to talk computers, and how we're going to be dealing with them in the future. In our next segment on modern sci-fi, we talk about the future of the human-computer interface.
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