Astronomers may have for the first time detected and measured the mass of an isolated stellar-mass black hole, a new study finds.
Scientists have no idea what the extinct megatoothed shark megalodon looked like, a new analysis finds.
For centuries the Roman Empire introduced new innovative technologies across the ancient world. Evidence of these Roman inventions and lessons still live on today.
Friction plays an important part in many everyday processes, such as converting the energy of motion into heat.