European astronomers led by Dr Federico Marocco from the University of Hertfordshire have discovered a brown dwarf with unusually red skies. Brown dwarf ULAS J222711−004547, marked with a circle. Image credit: F. Marocco et al. Brown dwarfs are too big to be considered as planets; yet they do not have sufficient material to fuse hydrogen in their cores to fully develop into stars. Sometimes described as failed stars, they are midway in mass between...
