'Failed star' is the coldest radio wave source ever discovered

Astronomers have discovered an ultracold brown dwarf, a "failed star" smaller than Jupiter and colder than a campfire that is emitting radio waves.

'Failed star' is the coldest radio wave source ever discovered
Astronomers have discovered an ultracold brown dwarf, a "failed star" smaller than Jupiter and colder than a campfire that is emitting radio waves.