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The Universe Can Expand Faster Than Light Without Breaking Physics

The universe’s expansion makes cosmic distance far less intuitive than simply measuring how long light has traveled.

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Einstein’s “Greatest Blunder” May Be Breaking Cosmology

Dark energy revived Einstein’s discarded cosmological constant and reshaped the leading model of the universe.

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Astronomers May Have Been Looking for Alien Megastructures Around the Wrong Stars

A new study suggests astronomers may have been looking for alien structures known as Dyson spheres in the wrong places.

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No Sample-Return Required? Scientists Demonstrate Extraterrestrial Biosignature Detection Method Using the Mars Rover's Existing Instruments

A new mineral-based biosignature detection method could identify signs of life on Mars using the Perseverance Rover's existing tools.

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Scientists Warn Extraterrestrial Encounters Could Endanger Earth—a Quarantine Facility on the Moon May Be Our Last Line of Defense

Researchers say a biocontainment facility on the Moon could be humanity's last line of defense against potential future alien contamination.

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NASA’s Perseverance Rover Finds Complex Carbon at Ancient Martian Site Rich in Potential Biosignatures

Evidence for possible life on Mars in the ancient past continues to build, thanks to a recent discovery by NASA’s Perseverance rover.