These podcasts are commentary and discussions of images posted on the Astronomy Picture of the Day website.
In today's image, we see the supernova remnant known as Cassiopeia A. This would have been seen to explode from Earth back in the later 1600. However,...
In today's image, we see a simulation showing the formation of a galaxy disk over billions of years compressed down into about 2 minutes. Galaxy evolution...
In today's image, we see the Dumbbell Nebula, also known as M27. This is an example of a planetary nebula which is the end state of a star much like...
In today's image, we see bioluminescent plankton giving off light in the waves off an island in the Indian Ocean. In the sky, we see the Milky Way as...
In today's image, we see the asteroid Ida with its moon, Dactyl. This moon was discovered in 1993 when the Galileo spacecraft flew by the asteroid on...