A rare sort of exotic tachyon particle
Anti-Photons are like normal Photons, carrier particles for the Electromagnetic force, unlike them they appear to have a 'negative frequency' compared to the rest of the universe's photons.
Anti-Photons are not naturally appearing particles and are less natural to the known universe than Tetryon Particles.
Because of their 'negative' frequency, they cancel out photons, creating dark spots of no light, even in the brightest day.
- The author was not aware 'Anti-Photons' were actually a thing when he created this page.