planetary mass objects Archives

This artist’s impression shows Cha 1107-7626. Located about 620 light-years away, this rogue planet is about 5-10 times more massive than Jupiter and doesn’t orbit a star.

Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Press Release

A Rogue Planet Is Growing At Record Rate Of Six Billion Tons Per Second

by Keith CowingOctober 5, 2025October 5, 2025

Astronomers have identified an enormous ‘growth spurt’ in a so-called rogue planet. Unlike the planets in our Solar System, these objects do not orbit stars, free-floating on their own instead.

Free-floating Planetary Mass Object -- NASA

Exoplanets, -moons, -comets, Status Report

Formation of Free-floating Planetary Mass Objects Via Circumstellar Disk Encounters

by Keith CowingOctober 30, 2024October 30, 2024

The origin of planetary mass objects (PMOs) wandering in young star clusters remains enigmatic, especially when they come in pairs. They could represent the lowest-mass object formed via molecular cloud […]