This may explain the strange properties of the orbits of our solar ... system some 4 billion years ago and warped the orbits of many planets. More NASA, ESA, Caltech / ISTOCK / GETTY IMAGES ...

Couldn’t we all do with a little stress reduction? Especially since all seven of the other planets in our solar system are about to become visible at once in a great planetary alignment.

Jess Thomson is a Newsweek Science Reporter based in London UK. Her focus is reporting on science, technology and healthcare. She has covered weird animal behavior, space news and the impacts of ...

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

And in some cases, orbital changes in a small solar system object can be used by astronomers to infer the presence of outgassing when it may not be directly observable for some reason, such as in ...

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 ... Mars satellite images could point ...