On the night of October 4, 2025, NASA’s Perseverance rover tilted its cameras away from the rocks of Jezero Crater and toward ...

Discovered in 2017 by Pan-STARRS atop Halealakalā on Maui, ʻOumuamua was the first confirmed interstellar visitor. Its ...

An interstellar comet carries water unlike anything in our solar system, revealing a far colder birthplace and clues about ...

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place ...

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 interstellar comet 3I/ATLAS changed significantly as it flew by the sun last fall, astronomers have discovered.

If an alien in the Alpha Centauri star system were craving pizza, it would take tens of thousands of years to deliver it ...

A team figured out the practical mechanics behind one of sci-fi epic film Interstellar’s most out-there ideas.