The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Our solar system contains many planets, moons, and asteroid that we may one day call home, but the future might instead be artificial space habitats, stations, and megastructures of vast size and ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

The OSIRIS-REx mission returned to the sample to Earth in September of 2023, and these studies show that it contains amino ...