Astronomy Cast

Wizzard Media

Science & Medicine, Natural Sciences

Chart Positions

Natural Sciences 12
Science & Medicine 32

Astronomy Cast brings you a weekly fact-based journey through the cosmos.


Episode 15: Listener Questions Answered

December 18th, 2006

Episode 15 of 460 episodes

We finally get organized enough deal with several listener questions: isn't dark matter just regular stuff we can't see? how can parts of the Universe be expanding faster than the speed of light? what will Betelgeuse look like when it explodes as a supernova? what's the speed of gravity? All these and more questions are answered.