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. 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. 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. 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. 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
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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)
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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. 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
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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 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 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 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
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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 Ep. 359: Modern Women: Margaret Geller
This episode is sponsored by Swinburne Astronomy Online (http://astronomy.swin.edu.au/sao/)
Margaret Geller is best known for her work on the large scale structure of the Universe, helping us understand the large clusters, super clusters and cosmic filaments that matter clumps into.
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We record Astronomy Cast as a live Google+ Hangout on Air every Monday at 12:00 pm Pacific / 3:00 pm Eastern. You can watch here on Universe Today or from the Astronomy Cast Google+ page.
Ep. 359: Modern Women: Margaret Geller
Margaret Geller is best known for her work on the large scale structure of the Universe, helping us understand the large clusters, super clusters and cosmic filaments that matter clumps into.
Astronomy Cast Ep. 445: Animals in Space Pt. 1: Insects and Arachnids
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!
Ep. 445: Animals in Space Pt. 1: Insects and Arachnids
We've talked about animals traveling to space in the past, but it's time to take another look, with many other creatures making the trip to the void. Today we're going to talk about the spineless insects and arthropods, and those tough as nails waterbears – tardigrades.
Astronomy Cast Ep. 446: Animals in Space Pt. 2: Mice and Other Small Animals
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!
Ep. 446: Animals in Space Pt. 2: Mice and Other Small Animals
Last week we talked about how the smallest creatures behave in space, but now we move up in size a little to small animals, like mice. What missions have they flown on, and how does microgravity affect their biology?
Astronomy Cast Ep. 450: Inflatable Habitats
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Ep. 450: Inflatable Habitats
Astronomy Cast Ep. 461: Measuring the Weather with Satellites
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's the weather doing? Is it going to rain today? How much? What about temperatures? We depend on modern weather forecasting, thanks, in part to the vast network of weather satellites. What instruments do they have, what orbits do they use.
Astronomy Cast Ep. 462: Modeling the Weather
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!
Have you noticed that weather forecasting has gotten much better in the last few years? Thanks to weather satellites, weather stations, and better forecasting techniques. How do scientists predict the weather with any kind of accuracy days or even weeks in the future.
Astronomy Cast Ep. 463: Pareidolia and the 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. 466: Origins of Zero (0)
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 depend on zero for our math to work right, but this number was actually invented in fairly recent times. Why do we need zero? Was it inevitable?
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 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 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 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. 476: The Overview Effect
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!
After they've been to space, many astronauts report that seeing the world from above has given them a totally new perspective on humanity and the state of our planet. It's called the Overview Effect. Today we'll talk about this, and what this perspective can teach us all.
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.
Astronomy Cast Ep. 470: Best Modern Sci Fi for the Science Lover - Part 2: 3D Printing
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 journey through interesting science fiction, this time we talk about speculative fiction dealing with materials science, nanotechnology and 3D printing. It's a staple in Star Trek, but what other stories deal with it?
Astronomy Cast Ep. 469: Best Modern Sci Fi for the Science Lover - Part 1 Space Exploration
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 always been fans of science fiction, but we really like our science. Today we'll talk about some books we've been reading recently that do a good job of dealing with the science in science fiction.
Astronomy Cast Ep. 468: Simulations for Science and Fun
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!
Astronomers depend on simulations to study the Universe. From relatively straightforward orbital simulations to vast simulations that try to recreate the large scale structure of the Universe from the Big Bang. Today we're going to talk about some of those simulations, as well as tools you can use simulate the Universe.
Astronomy Cast Ep. 467: Resonance
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!
Many of the moons and planets across the Universe are in resonance with each other and their star. What causes this resonance, and how can it help us understand the history of planetary formation and migration?
Astronomy Cast Ep. 465: Exploiting Interfering Light
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!
Electromagnetic radiation, also known as "light" is pretty handy for astronomers. They can use it to directly and indirectly observe stars, nebula, planets and more. But as you probably know, light can act like a wave, creating interference patterns tto teach us even more about the Universe.
Astronomy Cast Ep. 464: Why the Hype over an Exorock?
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!
Astronomers this week announced that they had discovered an asteroid or comet on a trajectory that brought it from outside the Solar System? Is this the first case of an object from deep space? And what can we learn from this discovery?
Astronomy Cast Ep. 460: Earth from Afar: Remote Sensing
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 space age has given us the ability to look at every corner of the globe in every wavelength. It's revolutionized our ability to predict the weather, keep track of environmental damage, and watch the world change. Today we look at what missions and technologies give us the ability to watch our world from afar.
Astronomy Cast Ep. 459: Arecibo Observatory
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 iconic Arecibo Radio Observatory has been a mainstay in science and science fiction. This Puerto Rico-based radio telescope was already in an uncertain level of funding. But now with the damage from Hurricane Maria, it might be shut down forever.
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