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

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

T he Solar System has just gotten a new official member. Currently, with the name of 2017 OF 201, this is a trans-Neptunian ...

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

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ... .</ ...

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 ...

A cloud of collapsing gas created our Sun, the first thing to form in our solar ... a place in the outer solar system that’s home to dwarf planets Pluto, Eris and Makemake and millions of comets.

Curious Kids is a series for children of all ages ... gas created our Sun, the first thing to form in our solar system. This happened about 4½ billion years ago. Then the planets began to ...

Are planets in the solar system ... all of the forming objects and likely finalized the location of the remaining inner planets, including Earth. All of Jupiter’s tugging helped put our planet ...

Recent observations by JWST of TRAPPIST-1 c ruled out a thick carbon dioxide atmosphere, indicating that the planet is not as ...