Cosmic saguaro

Saguaro cactus in the starlight, in the desert outside Tucson, Arizona.

Star trails from the ISS

Photo of star trails by an astronaut onboard the International Space Station (ISS).

Tycho supernova

New image of the Tycho supernova remnant from the Chandra X-ray Observatory.

Spiral galaxy in profile

Hubble Telescope view of a spiral galaxy - called NGC 3717 - oriented sideways.

Rainbow over Bavaria

A rainbow glows over Kranzhorn Mountain in Germany's Bavarian Alps.

UFO cloud

Lenticular cloud over Butte, Montana.

Northern lights caused green-colored clouds

Northern lights over Jämtland, Sweden.

Aurora over Sweden

"Nature's green magic over Sweden," said photographer Jörgen Norrland Andersson, who captured this image on September 27, 2019 Thank you Jörgen!

Minuteman III launch

Alex Ustick captured the launch of Minuteman III - an unarmed test missile - from Vandenberg Air Force Base in Lompoc, California.

The young moon returns

And, especially if you're on the southern half of Earth's globe, Venus and Mercury are also back in the evening sky.

2026 Donation Campaign

If EarthSky has ever helped you discover something new, prepare for an eclipse, spot a planet, or simply inspired a moment of wonder, today is the perfect day to give back. Your donation helps keep trusted science news, expert night sky guides, and independent science journalism free for everyone.

Please help keep EarthSky going by donating today!

Please help keep

EarthSky going!

If you've already donated, we apologize for the popup and greatly appreciate your support.