“It could be a low-mass star, or if it does not constantly fuse hydrogen in its core, it would be considered a brown dwarf, placing it somewhere between a gas giant planet and a star,” the report noted.

According to NASA, brown dwarfs are objects that are between the size of a giant planet like Jupiter and that of a small star. The agency explained in the note that more than 4 thousand common brown dwarfs have already been discovered, but none had previously shown movement out of the galaxy.