Our galaxy is full of wonder, both discovered and undiscovered. It wasn’t until 1997 that a group of scientists made a startling discovery in the Milky Way: an invisible spout that spews antimatter roughly 3,500 light years above our galaxy.
So what is antimatter? It’s exactly what it sounds like. Antimatter is the exact opposite of the matter that makes up every single thing around us, with the opposite charge. When antimatter and matter encounter one another, they annihilate each other and create gamma rays, which scientists can detect.
Some scientists thought that antimatter might be evidence of the still elusive dark matter, but those hopes were dashed…for now. Scientist Richard Lingenfelter says, “There is no great mystery. The observed distribution of gamma rays is in fact quite consistent with the standard picture.”