Marcus Chown’s “A Crack in Everything” is a journey through space and time with the people studying one of the most enigmatic ...

If Earth was (hypothetically) crushed into a black hole, it would be under an inch ... But it likely won't fall in. An artist's rendering of a white dwarf star speeding around the black hole ...

The known black holes that populate the universe fall into two types: those up to a few dozen times the mass of the sun and their supermassive counterparts that can weigh up to 50 billion solar ...