Constellations
Meet Sextans, the constellation of the sextant
Sextans the Sextant is in a dim patch of sky between Leo and Hydra that is home to some interesting galaxies, and one of the largest supermassive black holes.
Astronomy Essentials
Tonight
Visible planets and night sky guide for April
Visible planets and star guide for April 2024. See a 1-minute video preview of moon phases for the month of April, linked here.
Brightest Stars
Sun

Sun news April 16: Now we’re talkin’! 4 more M flares!

April 16, 2024, sun news. Four M flares have brought sun activity to moderate. The sun definitely appears to have woken up from last week's long nap.
Space

Large asteroid safely passed Earth: See pic here!

Check out the image of the large asteroid 2013 NK4 - which is about 2,000 feet (610 meters) wide - that safely passed Earth on April 15, 2024.
Space

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.
Space

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.
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.
Earth

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.
Space

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?
Tonight

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.

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