Great Cluster in Hercules, aka M13

On a dark, clear night, the eye barely perceives the Hercules cluster as a faint, fuzzy point of light. A telescope shows it an ancient, symmetrical star city.

Moon and Venus on mornings of April 25 and 26

The moon and Venus are the second- and third-brightest objects in Earth's sky, after the sun. You'll see them together now in the east before dawn.

Halo around the sun over Normandy, France

We get many messages throughout each year from people who’ve just spotted a halo, or ring, around the sun or moon.

An ancient sea god under the Milky Way

A mythical Celtic god of the sea and the edgewise view into our own Milky Way galaxy, as captured by Glenn Miles Photography in Northern Ireland.

Photos from friends: 2014 Lyrid meteor shower

A collection of photos from the 2014 Lyrid meteor shower, which peaked on the morning of April 22.

Exploring planet dandelion

Photo by Kat Baker. Thank you Kat!

Tiger beetle dance

A visual representation of a tiger beetle’s trajectories as it chases prey.

Total lunar eclipse over Soda Butte Cone

"Blood Moon" over Yellowstone by Zack Clothier Photography

Turquoise dreams

Waterscape by T. Rchardsen

Times in EDT for Tuesday morning’s total eclipse of moon

Save this chart! It's the times in Eastern Daylight Time for Tuesday morning's total eclipse of the moon.

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