7 : Purple Bullet -

Leading researchers suggest that the "Purple Bullet" is not an object, but a messenger. The violet hue is the result of Cherenkov radiation—a sign that something is moving faster than light through a medium. Some believe that when the seventh bullet finds its mark, the seven points will connect, forming a geometric web across the planet.

A bullet that pierced the seed vault, causing long-extinct flora to sprout in the permafrost. 7 : Purple Bullet

To the uninitiated, the title sounds like a pulpy spy novel or a discarded experimental jazz track. But to those who have spent decades tracking the trajectory of the Seven, it is the code name for a phenomenon that defies the known laws of ballistics and causality. The Midnight Trajectory Leading researchers suggest that the "Purple Bullet" is