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 (Planetary Science Institute), 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 thru patreon.com/AstronomyCast.

http://www.astronomycast.com

Eine durchschnittliche Folge dieses Podcasts dauert 30m. Bisher sind 1563 Folge(n) erschienen. .

Gesamtlänge aller Episoden: 33 days 23 hours 16 minutes

subscribe
share






Episode 26: The Biggest Structures in the Universe


This week we continue the story of galaxy formation, learning how groups of galaxies come together to form the biggest structures around - galaxy superclusters. And when you look at the Universe at this scale, environment is everything.


share








 March 5, 2007  27m
 
 

Episode 26: The Biggest Structures in the Universe


This week we continue the story of galaxy formation, learning how groups of galaxies come together to form the biggest structures around - galaxy superclusters. And when you look at the Universe at this scale, environment is everything.


share








 March 5, 2007  27m
 
 

Episode 25: How Galaxies Form


Our Milky Way is a complex and majestic barred spiral galaxy. But 13.7 billion years ago it began, like all galaxies, from the elementary particles formed in the Big Bang. How did our galaxy grow from nothing to the hundreds of billions of stars we see to


share








 February 26, 2007  29m
 
 

Episode 25: How Galaxies Form


Our Milky Way is a complex and majestic barred spiral galaxy. But 13.7 billion years ago it began, like all galaxies, from the elementary particles formed in the Big Bang. How did our galaxy grow from nothing to the hundreds of billions of stars we see today?


share








 February 26, 2007  29m
 
 

Episode 24: Fermi Paradox


We live in a mind bogglingly big Universe filled with countless stars. We know intelligent life evolved here on Earth. It must be common across the Universe, right? But if there's life out there, how come we haven't been visited by aliens yet? Why haven't


share








 February 19, 2007  29m
 
 

Episode 24: Fermi Paradox


We live in a mind bogglingly big Universe filled with countless stars. We know intelligent life evolved here on Earth. It must be common across the Universe, right? But if there's life out there, how come we haven't been visited by aliens yet? Why haven't we even picked up signals from alien television stations? Where's all the life?


share








 February 19, 2007  29m
 
 

Episode 23: The Drake Equation


If you're wondering how many extraterrestrials there are in our galaxy, you just have to use a simple equation developed by astronomer Frank Drake in 1961. Just find out how many stars there are, how many support life, how many advanced societies form, an


share








 February 12, 2007  31m
 
 

Episode 23: The Drake Equation


If you're wondering how many extraterrestrials there are in our galaxy, you just have to use a simple equation developed by astronomer Frank Drake in 1961. Just find out how many stars there are, how many support life, how many advanced societies form, and a few other details and we'll be set.


share








 February 12, 2007  31m
 
 

Episode 22: Variable Stars


Our Sun has been around for billions of years, and will last for billions more. We're lucky, it's pretty stable and regular as stars go, only changing in brightness a little now and then. But there are stars out there that change dramatically; astronomers


share








 February 5, 2007  28m
 
 

Episode 22: Variable Stars


Our Sun has been around for billions of years, and will last for billions more. We're lucky, it's pretty stable and regular as stars go, only changing in brightness a little now and then. But there are stars out there that change dramatically; astronomers call them variable stars, and they demonstrate just how bizarre and dangerous the Universe can be.


share








 February 5, 2007  28m