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

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

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

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

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 ...

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

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

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

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

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

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