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

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

Have you ever wondered what our solar system looked like 3.8 billion years ago? Were the planets we know today anything like ...

NASA's Parker Solar Probe (PSP) captured some mind-blowing images of the Sun from only 3.8 million miles away.

Astronomers have observed an object that originated from beyond our solar system, thought to be an interstellar comet, ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen—possibly predating our solar ...

What is the Solar System truly like? In this video, we take a closer look at real images captured by NASA and other space agencies, showcasing our planets and the vast beauty of the Milky Way without ...

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

I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...

Astronomers have been given the rare opportunity to study an extrasolar object after the recent discovery of the interstellar ...

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.

Officially named 3I/ATLAS, the comet was confirmed as having originated outside of Earth's solar system on July 3, according ...