The newly identified cluster of Kuiper Belt objects lies about 4 billion miles from the Sun, offering fresh clues about how the outer solar system formed and evolved.

A team of astronomers has confirmed the orbit of a distant planetoid at the farthest reaches of our solar system — aptly nicknamed "Farfarout." The minor planet, officially designated 2018 AG37, is ...

You probably already know that gravity can greatly influence cosmic objects as they make their way through space. We see this constantly in how the Sun's gravity causes planets to orbit it. And even ...

Aerojet, a GenCorp (NYSE:GY) company, announced today that its high-power Hall Thruster Propulsion System (HTPS) has successfully initiated operation on the Advanced Extremely High Frequency (AEHF) ...