Fish doorbell season is back! Help by ringing the bell

It's time for the fish in the Netherlands to migrate. But how do they get through the lock? You can help by ringing the fish doorbell to let them through!

Heart of our Milky Way revealed in new radio image

Astronomers used powerful radio telescopes to build an unprecedentedly detailed view of cold molecular gases in the center of the Milky Way.

Atmosphere of Uranus revealed in new 3D Webb observations

The James Webb Space Telescope has mapped the upper atmosphere of Uranus for the 1st time. It found new clues about Uranus' ionosphere and powerful auroras.

Is Sirius the most luminous star in the sky?

Sirius is the brightest star in Earth's sky because of how close it is to us. It's so bright you might see glints of different colors flashing from it.

The Winter Triangle stands out in the night sky

The Winter Triangle is a distinct pattern of stars in the night sky formed by 3 of the brightest stars: Sirius, Betelgeuse and Procyon.

Spectacular total lunar eclipse images from March 2-3, 2026

A total lunar eclipse lit up the sky this morning. See the stunning Blood Moon in all its glory in this photos from EarthSky's global community!

One of the biggest stars in the universe might be ready to explode

One of the biggest stars in the universe might be getting ready to explode. The star WOH G64 in a nearby galaxy showed a dramatic change in 2014.

Rubin Observatory launches real-time alert system

The Rubin Observatory is sending out real-time alerts of its discoveries. These alerts include objects such as newly discovered supernovas, asteroids and more.

Total lunar eclipse March 2-3: Last one for 3 years!

Overnight on March 2-3, 2026, there will be a total lunar eclipse of the full Blood Moon. Where will it be visible? See animations, charts and details here.

Lunar eclipse: Tips for watching and enjoying

A total lunar eclipse is coming up overnight on March 2-3, 2026. Here are some tips for watching and enjoying the total lunar eclipse.