Researchers have found a significant new relationship in spiral and irregular galaxies: the acceleration observed in rotation curves tightly correlates with the gravitational acceleration expected ...

One of the earliest indications of the existence of dark matter came from an examination of the rotation of nearby galaxies. The study showed that stars orbit the galaxy at speeds that indicate ...

DARK matter might talk to itself. The mysterious substance that outweighs all visible matter in the cosmos might be best explained if it’s able to interact with itself via an invisible force. Take a ...