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

The solar system may hold a hidden surprise. Astronomers are investigating the possibility of a mysterious ninth planet, often referred to as Planet Nine. If found, this discovery could change the ...

The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

Dec. 19, 2024 — New studies offer a clearer picture of how the outer solar system formed and evolved ... first attempts at interplanetary ... Dec. 9, 2024 — Dust storms on Mars could one ...

An Osceola County homeowner claims she's paying thousands of dollars for a home solar system that doesn't always work. This ...

Despite common assumptions, the disk of our Solar System is warped, and the planets travel around the Sun in slightly eccentric (or oblong) orbits. Scientists now think that a mysterious object ...

Michigan State University and NASA researchers discover seven dark comets that reveal new solar system secrets.