compact objects

Is this the Lightest Black Hole or Heaviest Neutron Star?Is this the Lightest Black Hole or Heaviest Neutron Star?

Is this the Lightest Black Hole or Heaviest Neutron Star?

About 40,000 light-years away, a rapidly spinning object has a companion that's confounding astronomers. It's heavier than the heaviest neutron…

12 months ago