The classification is not exactly strict at both ends. The line between a gas giant planet and a brown dwarf is vague. For example, JWST spotted objects that are likely brown dwarfs but are ...

While astronomers have previously identified other brown dwarf pairs, Gliese 229B is the first known example of a tight brown ...

Astronomers have now identified the tiniest brown dwarf, which is believed to be only three to four times the mass of Jupiter. The discovery was made using the James Webb Space Telescope ...