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Summer solstice in Mars’ southern hemisphere is April 25
The summer solstice in Mars' southern hemisphere happens on April 25, 2026. Summertime there typically kicks off dust season on the red planet.
April 22, 2026
Earth images from space: 10 incredible photos of our planet
Happy Earth Day! As a celebration of Earth, enjoy these photos, a collection of the 10 best Earth images from space. What are your favorites?
April 22, 2026
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
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
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
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
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
Huge ancient sandstorm on Mars revealed in rippled sediments
Dust storms are common on Mars. But ripples in blocks of bedrock have revealed evidence of a more intense sandstorm on Mars about 3.5 billion years ago.
April 15, 2026
The night sky in the time of the dinosaurs
The night sky in the time of the dinosaurs would have looked much different than today’s. Some famous stars had not yet been born. Read more.
April 14, 2026
Universe’s expansion rate: ‘Something doesn’t add up’
We think we understand the local universe's expansion rate. But measurements confirm a mismatch that could point to a need for new physics.
April 12, 2026
