Gamma

Fifty light-years away from our planet and just under fifty years ago, two rogue black holes collided. The epic cosmological merger resulted in the creation of the most powerful force in the universe--a gamma-ray burst.

Releasing more energy in a few seconds than our own sun will in its entire ten-billion-year life span, it fired away from the center of the newly formed black hole at the speed of light, headed for Earth. With only six months until its arrival, no one is aware that all life i...