A rare quadruple star system with two brown dwarfs orbiting two red dwarf stars could help shed light on how these "failed stars" change with age.

1st-of-its-kind quadruple star system could reveal secrets of 'failed star' brown dwarfs

Source: space
Source Link: https://www.space.com/astronomy/1st-of-its-kind-quadruple-star-system-could-reveal-secrets-of-failed-star-brown-dwarfs