Plus: Saturn’s moon Iapetus is visible, our Moon passes the bright star Spica, and Mars skims south of Pollux in Gemini in ...

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

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

Venus and Saturn are currently in conjunction, meaning the planets appear close together in the night sky from Earth. These ...

"A parade of planets, also sometimes referred to as a planetary alignment, is when several planets in our solar system appear ...

A new study suggests that a planet-sized object may have passed through the solar system billions of years ago. Its journey could have permanently altered the orbits of the outer planets.

has seven Earth-sized planets that all transit the star from our point of view. The planets in that system are actually in resonance with each other – meaning the outermost planet completes two ...

A recent discovery is shaking up our understanding of planetary systems. A multi-planet system, including a hot Jupiter, a ...

High radiation during a time of frenzied star formation in the Milky Way left one stellar population with few chances to form planets, a study reports.

Stargazers will be treated to a rare treat this month when six planets will "align" in the night sky for an eye-catching planet parade. Planets always appear along a line known as the ecliptic ...

Stargazers will be treated to a rare treat this month when six planets will "align" in the night sky for an eye-catching planet parade. Planets always appear along a line known as the ecliptic ...