Higher solar activity brings more radiation, which can damage satellite electronics and force some satellites to deorbit ...

I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

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

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

A new interstellar object, A11pl3Z, has been discovered in our solar system, marking the third such object to be observed. It ...

An "interstellar object" is speeding toward the inner solar system, where Earth is located, astronomers have confirmed.