One is a star orbited by a brown dwarf — an object that straddles ... Rocky planets, or the rocky cores of giant planets, need a ready supply of heavy elements in order to form.

Gaia unexpectedly discovered a giant exoplanet and a puzzling brown dwarf, challenging planetary formation theories and ...

This 2023 astronaut photo shows a series of slowly moving "star dunes" in the Erg Chebbi region of Morocco. Most of these ...