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. 

'Ring of fire' eclipse visible in US this weekend

On Sunday, millions of people around the world will be treated to an amazing sight: an annular solar eclipse in which the moon will cover as much as 94 percent of the sun, leaving a glowing ring of fire.