Tag Archives | comets

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Ep. 416: Fireballs from the Sky!

Every now and then we look up and see bright fiery balls falling from the sky. Don’t panic, these are just bolides. Sometimes they leave trails, sometimes they explode, and sometimes they survive all the way to the ground. Download the show [MP3] | Jump to Shownotes | Jump to Transcript (more…)

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A view of rivers in Montana, USA, from the ISS. Credit: ESA/Luca Parmitano.

Ep. 363: Where Did Earth’s Water Come From?

Where on Earth did our water come from. Well, obviously not from Earth, of course, but from space. But did it come from comets, or did the water form naturally right here in the Solar System, and the Earth just scooped it up?? Download the show [MP3] | Jump to Shownotes | Jump to Transcript […]

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Ep. 354: Comet Siding Spring vs. Mars

We were witness to a once in a million year event. A close approach of Comet Siding Spring to the Planet Mars. And fortunately, humanity had a fleet of spacecraft orbiting the Red Planet, ready to capture this monumental event in real time. What did we see? What will we learn? Download the show [MP3] […]

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Ep. 351: Asteroid Adventures

Astronomy Cast’s 2014/15 season begins! With Rosetta’s arrival at Comet 67/P, we’re about to see a comet up close and personal. What will it take to explore, exploit and enjoy the asteroids and comets hurtling around our Solar System. And how does science fiction have it all wrong?? (more…)

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Ep. 343: The Universe is Trying To Kill You

We always say that the Universe is trying to kill you, but we thought we’d really hammer the point home. Dr. Phil Plait from Bad Astronomy joins Fraser Cain for a very special episode of Astronomy Cast. Join us as we hammer out all the ways the Universe wants you dead. Download the show [MP3] […]

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Ep. 324: Sun Grazers

Comets can spend billions of years out in the Oort Cloud, and then a few brief moments of terror orbiting the Sun. These are the sun grazers. Some survive their journey, and flare up to become the brightest comets in history. Others won’t survive their first, and only encounter with the Sun. (more…)

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