Existing in the “mass gap” dividing two classes of cosmic heavyweights, the object could be the most massive neutron star, the lightest known black hole—or something stranger...
Room-sized “atom waves” could help probe the quantum realm
Gravitational-wave astronomers are probing the origins of abnormally massive black holes—and with them, the inner workings of their colossal galactic homes
If confirmed, the detection could be the first of its kind and would open new vistas on Einstein’s general theory of relativity and the physics of extreme matter
The first animal genus defined purely by genetic characters represents a new era for the sorting and naming of animals
A new mathematical model suggests planets interact with these structures in complex ways