Astronomers study a celestial object that blurs the line between stars and brown dwarfs

A celestial object, TOI-2155b, is challenging the definition of a star, existing on the boundary between stars and brown dwarfs. This object, orbiting TOI-2155, is about 80 times Jupiter's mass. It may be a massive brown dwarf or a very light star, lacking sustained hydrogen fusion. Studying rare objects like TOI-2155b helps astronomers understand the precise conditions required for stellar ignition and long-term burning.