There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...

The unusual orbit of a possible dwarf planet, known as 2017 OF201, makes it less likely that our solar system contains a ...

The Solar System has just gotten a new official member. Currently, with the name of 2017 OF, this is a trans-Neptunian object ...

Stars that pass close to the solar system could pull planets out of alignment, sending them hurtling into the sun or out into ...

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study's School of Natural ...

Today, it’s believed that Jupiter and Saturn, the largest planets, were the first to fully form, both within a few million ...

A new NASA mission to map the solar wind has returned some of its first images from its position in low Earth orbit. The ...