Scientists have found and directly imaged a small brown dwarf star which is classified as a T Dwarf because it is very cold. These stars also orbit a stars that burn hydrogen like how a planet does. To locate this star scientist used the Spitzer which has infrared sensors which made it easy to spot this T Dwarf.
The team also found another dwarf star which is smaller. The smaller dwarf star could be the youngest known T Dwarf yet. Then the Spitzer spotted another T dwarf which wasn't orbiting anything just floating along in space. The more massive of the first two dwarf stars is called HD 3651 B which is located in the Pisces constellation. The other one is called HN Peg B which is located in the Pegasus constellation.