Antimatter

"For the past year, I've been detecting antimatter signatures across the multiverse. Now, we don't know their origin. But if my algorithm is correct, all Earths could be in danger."

- Jay Garrick

Antimatter is a phenomenon that destroys matter within the multiverse, having the ability to completely destroy a universe.

Overview
Its origin and mechanisms are still unknown. Presuming from its name, antimatter is the opposite form of matter. For reasons unknown, antimatter has already been unleashed near and/or appeared in numerous universes in the multiverse, completely destroying their respective matter.

History
Between 2391 and 2392, Jay Garrick detected a number of antimatter signatures throughout the multiverse. By October 2392, he had marked multiple antimatter signatures on his map, as he detected them near Earths-2, 6, 7, 17, 21, 26, 32, and X.

In October 2392, antimatter was unleashed upon Earth-2, killing its population and ultimately destroying the universe.

Possible future
In a potential future, a wave of antimatter made its way through Central City, destroying all of its citizens and, ultimately, the universe.

Season 6

 * "A Flash of the Lightning" (flashforwards)

Season 8

 * "Starling City"

Behind the scenes

 * In the real world, antimatter is defined as the "antiparticles" of regular matter found in the universe. Particle accelerators around the world regularly produce tiny amounts, with only a few nanograms having been produced in total.