Two black holes merged together 2.4 billion light years away from Earth, and scientists have just figured out how fast the newborn ricocheted, and in which direction.

Asteroid deflection could backfire if the impact shoves the rock into a cosmic keyhole, a hidden trapdoor in space.

The team concluded that the recoil of the remnant of GW190412 surpassed 50 km/s – enough to expel the black hole from a ...