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What are star trails, and how do I photograph them?

Star trails are long-exposure photographs of stars taken as Earth turns, resulting in streaks of light across the sky. Here's how to photograph star trails.

Bruce McClure

July 14, 2024

Dark nebulae are obscuring clouds of gas and dust

Dark nebulae are clouds of gas and dust in space. They block the light of stars shining behind them. Often, they're locations where new stars are forming.

Kelly Kizer Whitt

May 24, 2024

Why does the moon seem to follow me when I’m in a car?

Here's something you - or your kids - might have noticed: When you're in a moving car, earthly objects get left behind, but the moon seems to follow. Why?

Deborah Byrd

April 19, 2024

When is the next total solar eclipse? Find out here!

When is the next total solar eclipse? If the April 8, 2024, total solar eclipse gave you the bug for eclipse-chasing, you'll want to know: Find out here!

Kelly Kizer Whitt

April 9, 2024

Total solar eclipse of April 8, 2024. Experience it here!

The April 8, 2024, total solar eclipse crossed Mexico, the U.S. and Canada! Relive it by watching a replay of EarthSky's livestream here.

Fred Espenak

Editors of EarthSky

April 9, 2024

Beta Centauri is one of the Southern Pointer Stars

Beta Centauri isn’t as famous as Alpha Centauri, but together, these brilliant Southern Hemisphere stars have inspired legends and guided mariners.

Larry Sessions

Shireen Gonzaga

April 4, 2024

April 8 solar eclipse maps are wrong along the edges

Your April 8 solar eclipse maps are wrong! The new map shows a narrower path of totality (in some places) than previously calculated.

Dave Adalian

April 2, 2024

Penumbral lunar eclipse to pass quietly March 24-25, 2024

The 1st of this year's 4 eclipses will flit by like a ghost in the night between March 24 and 25. It's a penumbral lunar eclipse, visible in North America. Charts and more from Guy Ottewell here.

Guy Ottewell

March 24, 2024