It looked like the sun set twice

A lone, small, very brightly illuminated passing cloud - at the exact point where the sun was going down - caused the illusion of a double sunset.

Last sunset of winter sun pillar

Photographer Josh Blash caught this sun pillar last night in Hampton, New Hampshire. It's caused by ice crystals drifting in the air.

New mosaic of Orion Nebula

The Orion Nebula - 1,400 light-years away- is the closest star formation region to Earth. This image is the latest in the Hubble Space Telescope's collection.

Last night’s successful SpaceX launch

After standing down due to high winds, SpaceX chose March 16 for its EchoStar XXIII launch. SpaceX’s Falcon 9 rocket delivered this commercial communications satellite for EchoStar Corporation to a geostationary transfer orbit.

Celestial spiral is a double star

It's not a spiral galaxy. It's a double star system seen from Earth to create a spiral shape in a shell of gas.

Venus as a crescent world

Photos from the EarthSky community of the planet Venus - next planet inward from Earth in orbit around the sun - in early 2017, in a crescent phase.

See it! Moon sweeps past Jupiter

Monday and Tuesday nights, the waning moon and this planet were near each other and the 2 brightest things in the night sky. Photos from the EarthSky community.

Cloud shadow on nearby clouds

Like all objects illuminated by sunlight, clouds cast a shadow.

Vibrant sundog

A sundog - a piece of a larger halo around the sun or moon - is caused by tiny ice crystals in the upper air.

Sliding stone, Death Valley

Here's a beautiful image of a sliding (or sailing or slithering) stone at Death Valley's famous Racetrack Playa. Cat Connor caught it on Christmas Day 2014.