Astronomy Cast
Astronomy Cast
Fraser Cain and Dr. Pamela Gay
Take a fact-based journey through the cosmos. Tune in to hear weekly discussions on astronomical topics ranging from planets to cosmology. Hosted by Fraser Cain (Universe Today) and Dr. Pamela L. Gay (SIUE), this show brings the questions of an avid astronomy lover direct to an astronomer. Together Fraser and Pamela explore what is known and being discovered about the universe around us. Astronomy Cast is supported through individual donations and the sponsorship of Swinburne Astronomy Online.
Ep. 591: What Are We Gonna Do With All That Space Junk?
Remember the good old days when there were only a few thousand living and dead satellites? Well, those days are long over. We're now entering an era where there will be tens of thousands of satellites. Not to mention the spent rocket boosters and other space junk. What kind of risk do we face and what can be done about it?
Jan 18
33 min
Ep. 590: Lunar Hazards: Dust, Radiation and More
2024 can't come soon enough. You know, that's the year when humans will set foot on the Moon again. Now don't you roll your eyes! That's the plan. Unless the plan changes. But my point is, explorers going to the Moon will need to be concerned about all kinds of hazards, like dust, radiation and gigantic Moon worms. I believe.
Jan 11
30 min
Ep. 589 - Lunar Resources: Water (Update) & Other Volatiles
We've talked about the Moon and its water many times here on Astronomy Cast, but there've been a bunch of big updates thanks to new research from NASA and others. Today we're gonna give you an update on the state of water on the Moon and the plans to take advantage of it.
Dec 21, 2020
30 min
Ep. 588 - Lunar Resources: Lava Tubes
All eyes are on the Moon. We're going back, this time to stay, right? One of the best resources on the Moon will be the lava tubes that criss-cross the subsurface of the Moon. These can provide protection from space, and a look at the geologic history of the Moon, and they can be enormous!
Dec 14, 2020
33 min
Ep. 587: The Artemis Accords
So the Moon is about to become a very busy place with multiple countries and private companies planning missions in the next few years. It's been decades since the Outer Space Treaty was negotiated. It's time for the Artemis Accords!
Dec 7, 2020
33 min
Ep. 586: Life As We Know It: Habitable Exoplanets & Extremophiles
As scientists continue to explore the Earth. They're discovering life, surviving and even thriving in extreme environments. What hints can this give us about what we might find as we search for live on other worlds.
Nov 30, 2020
33 min
Ep. 585: Super Earths, Mini-Neptunes & Gas Dwarfs
Astronomers are finding even more new extrasolar planets and they're starting to discover entirely new categories. There are classes of planets out there that we just don't have any analog here in the solar system. Let's talk about them!
Nov 23, 2020
32 min
Ep. 584: Sample Return Missions From Asteroids
So with a sample of asteroid Bennu firmly inside OSIRIS-REx's return capsule, it's time to bring this treasure home. So scientists can study the composition and history of the space rock. But it's not the only sample return mission out there, with Japan's Hayabusa II mission also bringing asteroid debris home. So today, let's talk about the missions and what we've learned so far.
Nov 2, 2020
30 min
Ep. 583: The 2020 Nobel Prize in Physics
This year's Nobel Prize in Physics was awarded to three brilliant researchers who worked out some of the secrets of black holes. Today we're going to talk about the chain of discoveries that led to this award.
Oct 26, 2020
29 min
Ep. 582: Building Bigger Black Holes
Did you hear the news? Nobel prizes for Black Holes! Now, we know there are stellar mass black holes and supermassive black holes, but how do you get from one to the other? How do black holes get more massive?
Oct 19, 2020
32 min
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