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Earth
Small ants clean larger ants in a surprising twist of nature
Small ants clean larger ants, a researcher has discovered. It's the first known case of interspecies grooming between ants.
April 20, 2026
Sun
Sun news: Auroras easing after stormy weekend
Sun news for April 20, 2026: Auroras are starting to ease after a weekend featuring G2 storms. Unsettled-to-active conditions should linger through tomorrow.
Astronomy Essentials
Tonight
Visible planets and night sky guide for April
Visible planets and night sky guide. As darkness falls, look for the young moon near Venus. A bit later, you’ll spot Aldebaran and the Pleiades cluster.
April 20, 2026
Space
Can we find alien life in groups of similar planets?
A new study from Japan suggests we could search for a sign of alien life by looking for suspiciously similar planets close together.
April 19, 2026
Space
Do Newton and Einstein’s laws of gravity hold across the cosmos?
Newton and Einstein's laws of gravity hold true across the largest structures in the universe. This new evidence strengthens the case for dark matter.
April 19, 2026
Space
Simulating how black holes light up the dark
When black holes tear apart stars, the wreckage heats up, creating brilliant flares. New simulations are showing these flares with more detail than ever before.
April 19, 2026
Earth
Will a super El Niño in 2026 bring record high temps?
Signs are trending toward a super El Niño to develop this summer. If it happens, we might see record high temperatures in 2026 and into 2027.
April 17, 2026
Space
DESI’s 3D map of the universe is complete!
Astronomers have completed the largest, most detailed 3D map of the universe ever made. It will help reveal how dark energy shapes the cosmos.
April 17, 2026
Brightest Stars
Alpha Centauri, the star system closest to our sun
Our closest stellar neighbors are the 3 stars that make up the Alpha Centauri system. They lie just over 4 light-years away from us.
April 17, 2026
Space
See and hear galaxies evolving in new simulations
See and hear galaxies evolving in new simulations with this video. The simulations help astronomers trace growth from the early universe to today.
April 16, 2026
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