For the first time, astronomers have used observations from a radio telescope and a pair of observatories on Maunakea to discover and characterize a cold brown dwarf, also known as a “super planet” or “failed star.” The discovery, designated BDR J1750+3809, is the first substellar object detected through radio observations—until now, brown dwarfs have largely been found from infrared sky surveys.
Source:
https://phys.org/news/2020-11-faint-super-planet-radio-telescope.html