#browndwarf — Public Fediverse posts

A newly found world blurs the boundary between #planet and #moon
The find reopens an old fight over what makes a planet a planet
Object is as massive as Jupiter and orbits a #browndwarf — a body that fuses deuterium in its core but is too small to burn hydrogen and shine as a true #star. The brown dwarf loops around a small star. That hierarchy of orbits makes system, called CD-35 2722, the first with known “exosatellite”, #astronomer Kevin reports
https://www.sciencenews.org/article/exoplanet-object-moon-planet-unknown
https://archive.ph/e3MII