Just the third-ever confirmed interstellar object has been detected in our solar system. Here's what we know. (Spoiler: It's ...

Scientists now say an interstellar comet discovered earlier this month could be one of the oldest that astronomers have ever ...

The solar system has an uninvited guest that is currently shooting toward us on a one-way trip through our cosmic ...

Astronomers have confirmed the third interstellar object on record is dashing through our solar system. Dubbed 3I/ATLAS, it ...

What at first seemed a routine detection of an object travelling through the solar system soon turned out to be anything but.

It's the so-called "Milky Way season" in the Northern Hemisphere. Here's everything you need to know about viewing the galaxy ...

Astronomers are tracking a newly spotted comet hailing from parts unknown, only the third time such an interstellar object ...

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

The Milky Way's core will be visible this month and through August. Here's what Tennessee stargazers should know.

Milky Way viewing is at its best right now, especially if you’re in the southern hemisphere. Here's what to look out for, says Abigail Beall ...