As Mars’s atmosphere thinned and its surface became cold, dry and irradiated billions of years ago, any surviving microbial life may have found its last refuge underground. Yet the environments most capable of sheltering life could lie metres—or kilometre

Somewhere in the dried bed of an ancient Martian river, the Perseverance rover has been drilling into rocks for more than four years — and last June, NASA scientists announced that two of them contain the same complex carbon-based molecules that form th

Europa’s Hidden Ocean May Be Even Harder to Reach Than We Thought

Wildfire forces evacuation of NASA's Deep Space Network complex in Spain

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Secrets of birdsongs' 'spectacular diversity' revealed

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NASA's Perseverance rover finds the strongest evidence yet of ancient life on Mars

See stunning images in this year’s Astronomy Photographer of the Year competition

Astronomy Photographer of the Year 2026 finalists announced