Each JuMBO pair comprises two gas giants, each between 0.7 and 30 times the mass of Jupiter. These "rogue" planet partners have been found orbiting each other — but not a parent star — at a distance ...
A "baby" planet that astronomers recently observed some 430 light-years from Earth may be the youngest planet ever discovered. Forming an estimated 3 million years ago, the planet may seem old to us.