Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

It appears our solar system is getting more popular with out-of-towners. Astronomers have found a third interstellar object, ...

NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the Atlas telescope in Chile earlier this week, and confirmed it was ...

The newly discovered interstellar visitor is just the third of its kind and fascinates astronomers who hope to learn from it ...