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

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

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

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

The terrestrial planets are the four innermost planets in the solar ... Enceladus orbits within the densest part of Saturn’s E Ring, and has recently been shown to be the source of that ring’s fine ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

With next-generation telescopes, tiny space probes, and more, scientists aim to search for life beyond our solar system—and make ... chance a rocky planet orbits a star close enough for the ...

Curtin University researchers have gained an unprecedented glimpse into the early history of our solar system through some of the most well-preserved asteroid samples ever collected, potentially ...

Mercury is the closest planet to the sun, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Mercury orbits ...

Two new studies show a briny, carbon-rich environment on the parent body of the Bennu asteroid was suitable for assembling ...