A Galaxy's ring of fire

How many rings do you see in this new image of the galaxy Messier 94 (below), also known as NGC 4736? While at first glance one might see a number of them, astronomers believe there is just one. This particular image was captured in infrared light by NASA's Spitzer Space Telescope. 

Comet storm rages in Eta Corvi

NASA's Spitzer Space Telescope has detected evidence of icy bodies raining down in an alien solar system.