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

Titan is unique in our solar system: it’s the only world besides Earth known to have stable liquids on its surface.

How did Earth, alone among the Solar System's rocky planets, become the home for life? How, among all this frigid ...

Earth may briefly capture as many as six moon fragments — called minimoons — at any given time before they move on to orbit ...

The habitable zone will expand to 10-50 AU, potentially making some outer solar system moons more temperate. While gas giants might survive the Sun's expansion, ...

How did Earth, alone among the solar system's rocky planets, become the home for life? How, among all this frigid ...

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

Recreating artificial solar eclipses in space could help astronomers decipher the inner workings of our sun much quicker than ...

The object, a celestial body from another star system, was discovered on Tuesday by the University of Hawaii’s Asteroid ...