Astronomy Cast

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.

http://www.astronomycast.com

Eine durchschnittliche Folge dieses Podcasts dauert 30m. Bisher sind 1390 Folge(n) erschienen. Alle 2 Tage erscheint eine Folge dieses Podcasts
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episode 546: Astronomy Cast 546: Weird Issues: Planetary Migration


546: Weird Issues: Planetary Migration Astronomy Cast 546: Weird Issues: Planetary Migration by Fraser Cain & Dr. Pamela Gay Before we discovered other planets, our Solar System seemed like a perfectly reasonable template for everywhere. But now...


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   28m
 
 

episode 545: Astronomy Cast 545: Weird Issues: Are comets asteroids or are asteroids comets?


545: Weird Issues: Are comets asteroids or are asteroids comets? Astronomy Cast 545: Weird Issues: Are comets asteroids or are asteroids comets? by Fraser Cain & Dr. Pamela Gay Things used to be so simple. Comets were snowballs from the outer...


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   29m
 
 

episode 544: Astronomy Cast 544: Weird Issues: Biosignatures


544: Weird Issues: Biosignatures Astronomy Cast 544: Weird Issues: Biosignatures by Fraser Cain & Dr. Pamela Gay Once again, another place where the Universe is going to make this difficult for us. Proving, once and for all that there's alien...


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   29m
 
 

Halley's Meteor Shower and Two spacecraft updates


Got clear skies? Go out tonight and catch the Orionids Meteor shower, a storm of falling stars generated by Halley's comet. Later this week, we'll see aurora like those that will one day be predicted by the ESA Solar Probe. We also have an update on...


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   7m
 
 

episode 543: Astronomy Cast 543: Weird Issues: The Habitable Zone


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. In this episode we mentioned donations.


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   27m
 
 

episode 542: Astronomy Cast 542: Weird Issues: The Age of the Universe


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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 2019-10-14  29m
 
 

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


541: Weird Issues: Expansion Rate of the Universe Astronomy Cast 541: Weird Issues: Expansion Rate of the Universe by Fraser Cain & Dr. Pamela Gay Just when the Universe was starting to make sense, the cosmos throws a curveball at us. Astronomers...


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 2019-10-07  29m
 
 

episode 540: Astronomy Cast 540: Weird Issues: How Do (or Don't) Planets Form?


540: Weird Issues: How Do (or Don't) Planets Form? Astronomy Cast 540: Weird Issues: How Do (or Don't) Planets Form? by Fraser Cain & Dr. Pamela Gay As astronomers started to discover planets orbiting other stars, they immediately realized...


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 2019-09-30  31m
 
 

episode 539: Astronomy Cast 539: Weird Issues: Why We Don't Know the Age of Saturn's Rings


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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 2019-09-23  30m
 
 

episode 538: Astronomy Cast Ep. 538: Asteroids: Rubble piles of the Solar System


538: Asteroids: Rubble piles of the Solar System Astronomy Cast 538: Asteroids: Rubble piles of the Solar System by Fraser Cain & Dr. Pamela Gay Thanks to all the work from Hayabusa 2 and OSIRIS-REx, astronomers are getting a much better look at...


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 2019-09-16  31m