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A hidden time dilation story unfolds in Project Hail Mary that secretly seems to make it almost as bittetsweet as Christopher ...

We spoke to a genuine astrophysicist about the accuracy of Star Trek's approach to interstellar travel, the holodeck, and the ...

Explore 25 Mind Melting Space Discoveries Scientists Just Made! From early universe galaxies to black holes devouring matter, ...

In Albert Einstein’s Special Theory of Relativity, the concept of “time dilation” illustrates that the flow of time is ...

The farthest spacecraft from Earth has shut down another instrument in the hopes of buying time for an upgrade that could ...

Over the last few years, optical atomic clocks have broken record after record in precision timekeeping. Atoms are cooled to ...

"Each interstellar comet brings a little bit of its history, its fossils, from elsewhere." ...

Astronomers analyzed the vapors coming off the comet when it neared the sun and found it had a lot of "heavy" water. That ...

A new study suggests that the comet that rambled past us from another star last year likely originated in a cold, isolated ...

The probe launched almost 50 years ago and is the farthest human-made object from Earth. Shutting down one of its scientific ...

NPR's Scott Detrow talks with Regina Barber and Nell Greenfieldboyce about the Artemis moon missions, the "seismic quiet" during a solar eclipse, and the origins of a mysterious interstellar visitor.