Starburst ring

Although at first glance you may see a number of rings in this image, astronomers believe that Messier 94 has just one starburst ring.

Spectacular sunset over Mono Lake

This photo was taken by Facebook friend Chris Tinker shortly after the sun set over Mono Lake, California.

Airglow over Yosemite National Park

Airglow is light that originates in the high atmosphere, associated with photochemical reactions of gases caused by solar radiation. Thank you Kristal Leonard-Ferrara!

A beautiful end to a star’s life

X-rays from the Chandra X-ray Observatory (pink) shows superheated gas around the dense, hot core of an aging star.

Delicate Arch illuminated by flashlight

Delicate Arch in Arches National Park, illuminated here by a woman with a flashlight.

Color under the storm clouds

After sunset, on the Gulf shores of Alabama

Milky Way over boat launch at Lake St. George, Maine

Notice the reflections of the stars and the Milky Way next to the dock in this shot by Mike Taylor.

A new day in New Zealand

Morning sun greets New Zealand's green landscape.

Shell of a recent supernova

The object G1.9+0.3 is 28,000 light-years from Earth, near the center of our Milky Way. It's an expanding shell in space, left behind by a recent supernova.

Moon in the country of midnight sun

This looks like any ordinary photo of a twilight sky, doesn't it? Yes, until you realize what time the photo was taken. It was July 1, 2013 at 1:16 a.m.