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PODCAST

365 Days of Astronomy - Weekly Edition

Fraser Cain & Dr. Pamela L. Gay

The weekly podcast from the International Year of Astronomy 2009. This podcast comes out weekly and includes each daily episode of the 365 Days of Astronomy Podcast.

science & medicine natural sciences

All Episodes

38:28

Ep. 550: Missing Epochs - Observing the Cosmic Dark Ages

365 Days of Astronomy - Weekly Edition ·

2019/12/07

Powerful observatories like Hubble and the Very Large Telescope have pushed our vision billions of light-years into the Universe, allowing us to see further and further back in time. But there are regions which we still haven't seen: the Cosmic Dark Ages. What's it going to take to observe some of these earliest moments in the Universe?

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34:13

Ep. 549: Stellar nucleosynthesis revisited: In and on...

365 Days of Astronomy - Weekly Edition ·

2019/12/02

Last week we gave you an update on the formation of elements from the Big Bang and in main sequence stars like the Sun. This week, we wrap up with a bang, talking about the death of the most massive stars and how they seed the Universe with heavier elements.

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41:36

Ep. 548: Stellar nucleosynthesis revisited: In...

365 Days of Astronomy - Weekly Edition ·

2019/11/25

The Universe started out with hydrogen and helium and a few other elements, but all around us, there are other, more proton-rich elements. We believe these heavier elements formed in stars, but which stars? And at what points in their lives? Today we'll update our knowledge with the latest science.

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58:27

Ep. 547: Why Astronomy Still Needs Humans

365 Days of Astronomy - Weekly Edition ·

2019/11/18

Few sciences have been able to take advantage of the power of computers like astronomy. But with all this computing power, you might be surprised to learn how important a role humans still play in this science.

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50:27

Ep. 546: Weird Issues: Planetary Migration

365 Days of Astronomy - Weekly Edition ·

2019/11/11

Before we discovered other planets, our Solar System seemed like a perfectly reasonable template for everywhere. But now we see massive planets close to their stars, which leads you to the question, how does it all get there. Do the planets form in place or do they migrate around?

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39:45

Ep. 545: Weird Issues: Are comets asteroids or are...

365 Days of Astronomy - Weekly Edition ·

2019/11/05

Things used to be so simple. Comets were snowballs from the outer Solar System, and asteroids were rocks from the inner Solar System. But now everything's all shades of grey. Astronomers have found asteroids that behave like comets and comets that behave like asteroids.

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56:33

Ep. 544: Weird Issues: Biosignatures

365 Days of Astronomy - Weekly Edition ·

2019/10/28

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.

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01:01:04

Ep. 543: Weird Issues: The Habitable Zone

365 Days of Astronomy - Weekly Edition ·

2019/10/20

Our series on Universe weirdness marches on. This week we take a look at the habitable zone, and how things aren't as simple as we thought.

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37:27

Ep. 542: Weird Issues: The Age of the Universe

365 Days of Astronomy - Weekly Edition ·

2019/10/14

Our series on Universe weirdness continues, this time we learn how astronomers are struggling to make sense of the age of the Universe.

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33:37

Ep. 541: Weird Issues: Expansion Rate of the Universe

365 Days of Astronomy - Weekly Edition ·

2019/10/07

Just when the Universe was starting to make sense, the cosmos throws a curve ball at us. Astronomers have been trying to accurately measure the expansion rate of the Universe as far back as Hubble. It's been tough to nail down, and now astronomers are starting to figure out why.

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58:49

Ep. 540: Weird Issues: How Do (or Don't) Planets Form?

365 Days of Astronomy - Weekly Edition ·

2019/09/30

As astronomers started to discover planets orbiting other stars, they immediately realized that their expectations would need to be tossed out. Hot jupiters? Pulsars with planets? We're now decades into this task, and the Universe is continuing to surprise us.

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59:30

Ep. 539: Weird Issues: Why We Don't Know the Age of...

365 Days of Astronomy - Weekly Edition ·

2019/09/23

How old are Saturn's rings? They could be brand new, or they could be as ancient as the Solar System itself. Planetary scientists thought they knew the answer thanks to new data from Cassini, but new ideas are calling even that into question.

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37:38

Ep. 538: Asteroids: Rubble piles of the Solar System

365 Days of Astronomy - Weekly Edition ·

2019/09/16

Thanks to all the work from Hayabusa 2 and OSIRIS-REx, astronomers are getting a much better look at the smaller asteroids in the Solar System. It turns out, they're piles of rubble... but fascinating piles of rubble. Let's talk about what we've learned so far.

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01:00:19

Ep. 537: Reusable Rocket Revolution

365 Days of Astronomy - Weekly Edition ·

2019/09/09

We took a hiatus this summer, but SpaceX sure didn't, with the tests of the Starhopper prototype. Today we're going to talk about the revolution in reusable rocketry and quest to build a fully reusable two-stage rocket.

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0:54

Libsyn Survey Request

365 Days of Astronomy - Weekly Edition ·

2019/08/10

Please help us keep bringing you content by going to http://survey.libsyn.com/astronomycast and filling out the survey, so Libsyn can find us sponsors for Astronomy Cast!

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02:03

Astronomy Cast on Hiatus until Sept 2019

365 Days of Astronomy - Weekly Edition ·

2019/07/01

Astronomy Cast will be on hiatus for July and August. Don't worry, we'll be back in September, and we might just have surprises for you all along this summer! Don't forget you can still catch Pamela with Daily Space, rocket launches and specials on CosmoQuest's Twitch channel, and you can find all the space news and videos from Fraser at Universe Today! We usually record Astronomy Cast every Friday at 3:00 pm EDT / 12:00 pm PDT / 19:00 UTC. You can watch us live on here on AstronomyCast.com, or the

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49:09

Ep. 536: Everyday Relativity

365 Days of Astronomy - Weekly Edition ·

2019/07/01

Relativity is used in more day to day situations than you may realize. In this episode, we will count (some of) the ways. This episode is brought to you live from the All-Stars Star Party in Indian Wells, California.

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58:32

Ep. 535: Astronomy-Related Things To Do This Summer

365 Days of Astronomy - Weekly Edition ·

2019/06/24

It's summertime, and time for our annual Astronomy Cast hiatus. But that doesn't mean that the astronomy adventure has to end. Today we'll give you some tips and tricks for astronomy summer adventures.

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59:16

Ep. 534: Modern South African Astronomy

365 Days of Astronomy - Weekly Edition ·

2019/06/17

Last week we talked about some ancient south African astronomy, so this week we'll talk about the state of modern astronomy in the southern part of Africa, which happens to be a great place with nice dark skies and a great view into the heart of the galaxy.

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36:20

Ep. 533: Indigenous South African Astronomy

365 Days of Astronomy - Weekly Edition ·

2019/06/10

Let's move to another continent this week, and look at the astronomy that was going on in southern Africa in ancient times.

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473 results

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