These bright rims and flowing shapes look ghostly on a cosmic scale.

Light-years across, this suggestive shape known as the Seahorse Nebula appears in silhouette against a rich, luminous background of stars.

What's happening in the sky? Unusual lights appeared last week to hover above Whitefish Bay on the eastern edge of Lake Superior between the USA and Canada.

How did galaxies form in the early universe?

Apollo 12 was the second mission to land humans on the Moon.

A meteor, a comet, and a photogenic nebula have all been captured in this single image.

Not a Falcon 9 rocket launch after sunset, the Cat's Eye Nebula (NGC 6543) is one of the best known planetary nebulae in the sky.

Taken near local midnight, this autumn night's panorama follows the arch of the Milky Way across the northern horizon from the High Fens, Eifel Nature Park at the border of Belgium and Germany.

On October 10, a new telescope reflected the light of the setting Sun.

Messier 15 is an immense swarm of over 100,000 stars.