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

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.

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

The Solar Ultraviolet Imager, or SUVI, onboard NOAA's GOES-19 satellite, which launched on June 25, 2024, began observing the sun on Sept. 24, 2024. SUVI monitors the sun in the extreme ...

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

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

The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered?

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, researchers say.

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

Beginning in the 1960s, satellite instruments have measured Earth's reflected broadband shortwave radiation and emitted ...

Atomic-6's "space mast" and "space hinge" technology, backed by $2M from the Space Force, will allow satellites to avoid ...