An international team of astronomers has discovered a distant planetary system that challenges long-standing theories of how ...

NASA’s Interstellar Boundary Explorer, known as IBEX, has spent more than a decade mapping an invisible structure of magnetic ...

For those who enjoy viewing the night sky, a unique opportunity is just around the corner late this month.

A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, ...

The solar system does not end neatly at Neptune’s orbit. This episode reveals the vast, invisible structure of icy debris beyond the known planets, shaped by gravity and time. From scattered objects ...

This weekend, six planets are set to share the sky in a rare “planet parade,” giving stargazers a short but magical window to ...

Astronomers have found a distant world that challenges planetary formation theory, with a rocky planet where gas giants should be.

Add Yahoo as a preferred source to see more of our stories on Google. Digital art of distant planet - Dottedhippo/Getty Images On August 24, 2006, our solar system lost a planet. It wasn't by ...

Six planets will briefly share the twilight sky this month - but the conditions have to be just right.