New research suggests that dark matter, the universe's most mysterious "stuff," may actually have been born "hot." If this is the case, the best current model we have of cosmic evolution, the standard model of cosmology, also known as the Lambda Cold Dark Matter (LCDM), may need serious revision or overwriting altogether, altering the rules of the epic game of hide and seek that has been ongoing between dark matter and scientists for decades.
Dark matter is a headache for researchers because it doesn't interact with electromagnetic radiation, light, in layman's terms. This not only makes dark matter effectively invisible, but it also means that scientists know it can't be made of the electrons, protons, and neutrons that compose the atoms making up everything from the most massive stars down to the tiniest bacteria, because they do interact with light. Couple this with the fact that dark matter outweighs ordinary matter in the universe by a ratio of five to one.
