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

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in circular orbits around the Sun on a flat disk. But in reality, our Solar ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

This may explain the strange properties of the orbits of our solar system's planets, which are not quite perfectly circular, and all lie on slightly different planes. NASA artist’s conception of ...

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

“We predict the existence of an Earth-like planet and several TNOs on peculiar orbits in the outer solar system,” write the authors, Patryk Sofia Lykawka of Kindai University, Japan and ...

But in reality, our Solar System’s disk is far from flat. The whole system is actually warped. If those intro depictions were more accurate, the orbits of the planets would be more eccentric—think ...

An unidentified interstellar object, possibly eight times Jupiter’s mass, may have disrupted the solar system’s planets.

Astronomers have sent artificial satellites (satellites that are manmade) to orbit several Solar System objects, including Jupiter, the asteroid Vesta and Mars. Polar orbits take the satellites ...

The Sun is the largest object in the Solar System. The Sun’s huge gravitational ... for example, Mercury orbits once every 88 Earth days, but Neptune orbits once every 165 Earth years For ...

But in reality, our Solar System’s disk is far from flat. The whole system is actually warped. If those intro depictions were more accurate, the orbits of the planets would be more eccentric ...