Binary System

A binary system is a system of two astronomical bodies which are close enough that their gravitational attraction causes them to orbit each other around a barycenter. More restrictive definitions require that this common center of mass is not located within the interior of either object, in order to exclude the typical planet–satellite systems and planetary systems. The most common binary systems are binary stars and binary asteroid, but brown dwarfs, planets, neutron stars, black holes and galaxies can also form binaries. A multiple system is like a binary system but consists of three or more objects such as for trinary stars and trinary asteroids.

Read more in the app

7-year eclipse reveals 'exceptionally rare' binary system with 1000-year orbit

Astronomers Unveil First 3D Model of a Planet Orbiting a Binary System

Water-World Super-Earth Found in Nearby Binary System

Astronomers Discover Binary System Ejecting Common Envelope at 450,000 MPH

Cosmic dust imaged by the airborne SOFIA observatory reveals a white dwarf eclipsing a variable star in a binary system.

A Recently Discovered Double Binary System is Unstable. Stars Could Collide, Leading to a Supernova

MIT Astronomers Discover Mysterious “Black Widow” Binary System

Planets Have Just Started to Form in This Binary System

HR 6819 is Binary System with No Black Hole, Astronomers Say

The axis of rotation of a black hole in a binary system is tilted more than 40 degrees relative to the axis of the stellar orbit. Scientists have often assumed this difference to be very small and the finding challenges current theoretical models of black hole formation.

A wide-orbit giant planet in the high-mass b Centauri binary system

SPHERE Directly Images Wide-Orbit Gas Giant in Nearby Binary System

Neptune-Sized Exoplanet Discovered in Binary System NGTS-14