Unique Worlds
However, the newfound planets around GJ299A and GJ180, known as GJ299A c and GJ180 d respectively, orbit sufficiently enough to avoid tidal locking. The team members confirmed. This makes GJ 180 d a unique world. As per the team leader of the Carnegie Institution for Science in Washington, D.C., Fabo Feng, GJ180 d is the closest temperate super-earth that isn’t tidally locked to the star, which boosts its likelihood of supporting and hosting life. This super-Earth is slightly bigger than the Earth and has at least 7.5 times the Earth’s mass.

On the other hand, GJ299A is another super-Earth and is probably 7.9 times the Earth’s mass. GJ180 d finished one orbit in 106 Earth days while GJ299A c takes 122 Earth days for the same. GJ229 A c resides in a binary system containing a brown dwarf (which is called GJ229B) and a red dwarf. Brown dwarfs are bigger than the gas-giant planets but are too small to go through fusion reactions in the core. It is why they are also called failed stars.