Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

One year ago, on July 1 2025, astronomers discovered a fascinating new object moving through the Solar System. Detected by ...

Vera C. Rubin Observatory discoveries announced at this week’s AAS 248 include 380 trans-Neptunian objects found in six weeks ...

Astronomers say interstellar comet 3I/ATLAS may be up to 12 billion years old, making it far older than the Solar System. New ...

When 'Oumuamua traversed our solar system in 2017 it was the first confirmed Interstellar Object (ISO) to do so. Then in 2019, Comet 2l/Borisov did the same thing. These are the only two confirmed ...

Astronomers surveying the outer solar system have revealed that a rare object far beyond Neptune is moving in sync with the eighth planet in an unexpected way. Called 2020 VN40 and first discovered in ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Astronomers have spotted ...

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed. The object -- likely a comet -- was first detected in data collected between by ...

Carnegie’s Scott Sheppard and his colleagues — Northern Arizona University’s Chad Trujillo, and the University of Hawaii’s David Tholen — are once again redefining our solar system’s edge. They ...