Two stars were once considered coldest known
Excerpt from the September 18, 1965, issue of Science News Letter
JUST CHILLIN’ Some brown dwarfs, such as the “Y dwarf” illustrated here, have temperatures at or below room temperature. Y dwarfs were discovered in 2011.
JPL-Caltech/NASA
Coolest stars found — The coolest stars yet have been discovered. One is reported to have a surface temperature as low as 800° F….