Ep. 566: When Comets Fall Apart
As everyone knows, the Universe owes us a bright comet. There have been a lot of promising candidates, but in the end, they always fail to live up to our expectations. Comets keep on breaking up with us.
read moreEp. 565: When Worlds Collide
So much of our Solar System has been shaped by enormous collisions early on in our history. Seriously, the nature of every planet in the Solar System has some evidence of massive impacts during some point in its history.
read moreEp. 564: Mini Moons
Last month astronomers announced that they had detected a tiny asteroid that had been captured by the Earth’s gravity well and had been sharing our orbit for a few years. Today, let’s talk about the smallest moons in the Solar System.
read moreEp. 563: White Dwarf Mergers
http://traffic.libsyn.com/astronomycast/AstroCast-200330.mp3Podcast: Play in new window | DownloadSubscribe: Android | RSS White dwarfs are usually about 60% the mass of the Sun, so it was a bit of a surprise when astronomers found one that was almost exactly twice that. What happens when white dwarfs merge? Download MP3| Download Raw Show with Q&A| Show Notes | Transcript Show Notes White Dwarfs: Compact Corpses of Stars (Space.com)White Dwarf Stars (NASA)A massive white-dwarf merger product before final collapse (Nature)White Dwarf...
read moreEp. 562: Dealing with COVID-19 and the Changes it will Bring
Pamela and Fraser discuss the implications of COVID-19 and it’s changes on the world, and what we all can do during this time.
read moreEp. 561: Remembering Katherine Johnson
We lost a bright star here on planet Earth last week. NASA mathematician Katherine Johnson passed away at the age of 101, after an incredible career of helping humans land on the Moon. If you saw the movie Hidden Figures, you’ll know what I’m talking about.
read moreEp. 560: Betelgeuse
You might be surprised to hear that we’ve never done an episode of Astronomy Cast featuring Betelgeuse. Well, good news, this is that episode. Let’s talk about the star, why it might be dimming, and what could happen if it explodes as a supernova.
read moreEp. 559: The Surface of the Sun
A brand new telescope has completed on Maui’s Haleakala, and it has just one job: to watch the Sun in unprecedented detail. It’s called the Daniel K. Inouye telescope, and the engineering involved to get this telescope operational are matched by the incredible resolution of its first images.
read moreEp. 558: Supernova SN 2006gy
http://traffic.libsyn.com/astronomycast/AstroCast-200210.mp3Podcast: Play in new window | DownloadSubscribe: Android | RSS We’ve been following this story for more than a decade, so it’s great to finally have an answer to the question, why was supernova 2006gy so insanely bright? Astronomers originally thought it was an example of a supermassive star exploding, but new evidence provides an even more fascinating answer. Download MP3| Download Raw Show with Q&A| Show Notes | Jump to Transcript or Download Show Notes SN 2006gy...
read moreEp. 557: Red Dwarfs: Friend or Foe
http://traffic.libsyn.com/astronomycast/AstroCast-200203.mp3Podcast: Play in new window | DownloadSubscribe: Android | RSS On the one hand, red dwarfs are the longest lived stars in the Universe, the perfect place for life to hang out for trillions of years. On the other hand, they’re tempestuous little balls of plasma, hurling out catastrophic flares that could wipe away life. Are they good or bad places to live? Download MP3| Download Raw Show with Q&A| Show Notes | Jump to Transcript or Download Show Notes Red dwarf...
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