Astronomers have uncovered evidence of a potential second Kuiper Belt, expanding the boundaries of our solar system. Here's ...

a sphere around our solar system home to millions of comets, and it's in an orbit of roughly 80,000 years. It was first ...

Astronomers have discovered a group of objects beyond the Kuiper Belt, suggesting the existence of a second, more distant belt in our solar system.

An newly discovered asteroid will be captured by Earth's gravity this fall. The "mini-moon" will spend about two months in ...

Soyuz MS-25 is scheduled to undock from the ISS on Sept. 23 at 4:37 a.m. ET. A NASA astronaut and two record-setting Russian cosmonauts are set to head back to Earth on Monday (Sept. 23), and you can ...