Gauging the mass of a black hole is tricky, but astronomers have devised multiple methods to measure the heft of these galactic gluttons ...

It’s a little complicated to weigh a dying person on a hospital bed, but that didn’t matter to Duncan MacDougall. In the ...

Graphene is stronger than steel and a better conductor that copper, making the two-dimensional material of particular ...

Could we put this all over the world and stop using fossil fuels ... gravitational potential energy, and spring potential energy. Kinetic energy has to do with the motion of an object—the faster it’s ...

For scientists, learning more about how black holes behave is essential to understanding how the universe works. A recent ...