Scientists detected ripples in space and time from a potentially new class of collision in the universe. Their observatory cracked a 100-year-old mystery posed by Einstein.

· Large collisions in space, like those between black holes or neutron stars, create ripples in space-time called gravitational waves. The phenomenon was first predicted by Albert Einstein.
· *The Laser Interferometer Gravitational-Wave Observatory* (LIGO) recently sensed gravitational waves from a collision of two neutron...