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Astronomy Essentials
Meteor showers are here! 10 easy tips for watching
Meteor showers are unpredictable but nothing beats them for a fun and relaxing time under the stars. Here are our 10 tips to optimize your meteor viewing time.
April 21, 2026
Sun
Sun news: More geomagnetic storms last night
Sun news for April 21, 2026: G1 storms returned overnight as a coronal hole's fast solar wind continued to disturb Earth's magnetic field.
Astronomy Essentials
Clusters Nebulae Galaxies
Meet M13, the Great Globular Cluster in Hercules
Many stargazers call it the finest globular cluster in the northern half of the heavens. It's M13, also known as the Great Cluster in Hercules.
April 21, 2026
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
Astronomy Essentials
Tonight
Visible planets and night sky guide for April
Visible planets and night sky guide. This evening, look for the moon near bright Jupiter and the twin stars of Gemini. And don't miss the Lyrid meteor shower!
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
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