Previous observations of stars whipping around an unseen mass—especially a bright star called S2—have pointed to an object about four million times the Sun’s mass. The standard interpretation is a ...

Spiral galaxies don’t rotate like solid disks — if they did, their arms would wind themselves into tight spirals and disappear. Instead, stars pass through vast density waves while mysterious dark ...

A recent study by Rajendra Gupta, published in "Galaxies," proposes that cosmic phenomena conventionally ascribed to dark matter and dark energy can be explained by the temporal weakening of ...

Saul Hernandez, a New Mexico State University senior studying physics and linguistics with a minor in astronomy, has turned ...

New research suggests that the core of our galaxy may not be a supermassive black hole, but a colossal clump of dark matter.