The host star, HIP 67522, is slightly larger and cooler than our Sun. But unlike our middle-aged star, this one is just 17 ...

For only the third time in recorded history, an interstellar object has crossed into our solar system, creating quite the ...

Earth" that is located about 154 light-years away and is nearly twice as big and four times as massive as our planet.

Mars is thought to currently have all the necessary ingredients for life except for perhaps the most important one: liquid ...

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

The European Space Agency said Wednesday that scientists have discovered what might be only the third known interstellar ...

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

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

The Universe’s most abundant ice isn’t formless—it’s secretly laced with crystals. And that might change how we think about ...

The first interstellar object spotted in our Solar System was the cigar-shaped ‘Oumuamua, discovered in 2017 by the ...

In our analysis this week, we look at how NASA's proposed budget would slash the agency's science division by nearly 50%.