15 Cosmic Events That Could Erase Earth (Someday)

7. Galactic Collision

In about four billion years, our Milky Way will collide with the neighboring Andromeda galaxy. Although stars are unlikely to physically crash, the cosmic upheaval could destabilize our solar system, possibly flinging Earth into the freezing depths of intergalactic space. Computer simulations by NASA and ESA reveal the dizzying complexity of this future cosmic dance.