Astronomers Spot Possible Signs of Antimatter Disappearing Beyond Our Galaxy

Somewhere beyond the familiar glow of the Milky Way, matter may be meeting its mirror image in a spectacular act of cosmic annihilation. A recent study suggests that our galaxy could be leaking antimatter into the vast darkness of intergalactic space, where these elusive particles collide with ordinary matter and disappear in flashes of energy.

A team of astronomers may have detected the gamma-ray signature produced when antimatter particles, or positrons, collide with electrons outside of the Milky Way for…