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

Voyager 1 is losing power, and NASA just shut down a decades-old instrument to keep it going. The sacrifice could help the ...

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

Harvard astronomer Avi Loeb joined ChicagoLIVE to discuss new developments in the search for extraterrestrial life, including ...

NASA engineers have shut down another instrument on Voyager 1 to preserve the power of the most distant spacecraft ever sent into space.

The Subaru Telescope achieved first light in January 1999 and entered its 27th year of operation in 2026. In March 2025, ...

"We hope to gain a deeper understanding of how planetesimals and planets formed in a wide variety of stellar systems, including our own solar system." When you purchase through links on our site, we ...

An unexpected guest has made its way into our Solar System. It’s an interstellar object, an ISO. And it’s tumbling through ...

On October 4, 2025, NASA’s Perseverance rover pointed its cameras away from the Martian rocks it was built to study and ...

A comet named 3I/ATLAS was first discovered on July 1, 2025, and is located about 420 million miles away from Earth, according to NASA. Thankfully, the comet poses no threat to Earth.

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