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

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

This article was originally featured on The Conversation. Are planets in the solar system that are closer to the Sun older than the ones further away? – Gavriel, age 10, Paducah, Kentucky A cloud of ...

On May 21, the International Astronomical Union’s Minor Planet Center announced the discovery of 2017 OF 201, which, because of its distance beyond Neptune, is classified as a trans-Neptunian object ...

Astronomers have discovered seeds of rocky planets forming in the gas around the baby sunlike star providing *** peek into the start of our own solar system. The the thing that we've discovered is ...