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

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 ...

Since NASA's Cassini probe arrived at Saturn in 2004, the ringed planet's small inner satellite, Enceladus, has become one of the most intensely studied and debated worlds in the entire solar system.

A study simulated what would happen if a super-Earth orbited in the middle of our solar system, and the results are chaotic.

A satellite orbiting Mars captured a stunning view of our solar system. The European Space Agency recently released footage filmed this year by its Mars Express satellite, which has been snapping ...

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

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?

Mysterious Earth-sized planet could be hiding in plain sight in our Solar System Discovery may unravel new constraints on planet formation and evolution, scientists say ...

Black holes about the size of a hydrogen atom could be careening through the solar system unnoticed. But their days of stealth may be numbered. Two teams of researchers propose methods to search ...

Is there a possible ninth planet in our solar system? Researchers say they may have found a candidate (Credit: ESO/Tom Ruen/nagualdesign) But, the announcement has been met with some skepticism.