Dark matter

Dark matter is a theoretical concept in physical cosmology. It is a form of matter that comprises roughly 85% of all matter in the known universe. It is comprised of subatomic particles and promotes various gravitational effects. Dark matter does not appear to have an observable reaction with electromagnetic radiation and is thus invisible in the electromagnetic spectrum.

In fiction
In speculative fiction, dark matter is most widely explored in media of the science fiction genre. For example, in The Flash television series, particles of dark matter produced unforeseen reactions in individuals' physiology when it directly interacts with it. It is believed that this may play a hand in the creation of Metahumans, which are human beings who develop inexplicable abilities after being exposed to dark matter. In many cases, these metahumans were actually generated following exposure to unknown cosmological elements in the wake of a particle accelerator explosion.

Appearances

 * Flash: What's Past Is Prologue