Did this Mars rock once lie along an ancient lakeshore?
NASA's Perseverance rover sampled an unusual Mars rock called Bunsen Peak. It is rich in carbonate and silica and likely came from an ancient lakeshore beach.
Webb telescope peers into young planetary systems
NASA's Webb space telescope looked for baby planets in the protoplanetary disks in 3 young planetary systems. It didn't find any, and scientists explain why.
Astronomy Essentials

Visible planets and night sky guide for April

Visible planets and star guide for April 2024. The moon reaches 1st quarter today. In the evening of April 15, it's near Pollux and Castor.
Brightest Stars

Sun news April 15: Solar activity surge?, high number of sunspot regions and filaments

April 15, 2024, sun news. The sun is covered in sunspots, filaments, and prominences as flaring activity is on the rise. Will we see a surge?
Today's Image

Total solar eclipse pics and video from the EarthSky community

Check out these wonderful total solar eclipse pics and video from our EarthSky community! See our editor's picks that capture the partial and total phases.

Death Valley is in bloom, temporary lake still there

The heavy rains in Death Valley National Park over the past 6 months created a temporary lake and now a profusion of wildflowers.

Enceladus hosting cell-sized particles, a hint of life?

A new study of Cassini data has revealed bacteria-sized particles in the plumes of Saturn's ocean moon Enceladus. Could they be evidence of microbial life?

Use the Big Dipper to find the Little Dipper

Polaris marks the end of the handle of the Little Dipper. The 2 outer stars in the bowl of the Big Dipper point to Polaris and help you find the Little Dipper.

Monday’s total solar eclipse from space

Earth-observing satellites captured imagery of the Moon’s shadow as it raced eastward over North America on the April 8, 2024 total solar eclipse.

Asteroid Apophis to sweep close 5 years from tomorrow

Five years from now, on April 13, 2029, the asteroid Apophis will zoom safely past the Earth. This much-anticipated event is a "must-see" for all.

2024 EarthSky Fundraiser

Any amount will help us reach our goal.

Would you consider


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