Exotic dark matter is still used to explain the formation and dynamics of large spiral galaxies like our own Milky Way. But ...

Without that gravitational glue ... the supposed site of an ancient, high-speed collision. When the two original galaxies collided, their dark matter fractions kept right on going, zooming ...

As blanket terms, physicists call "missing" stuff pushing the cosmos outward dark energy, and pieces holding galaxies ...

The clash of two galaxy clusters in Abell 2146 is teaching astronomers about the kinds of "collisionless" shock waves that occur in our own solar system.

Galaxy clusters contain hundreds of galaxies and huge amounts of hot gas and dark matter and are among the largest structures in the universe. Collisions between galaxy clusters release enormous ...

Also, when galaxies collide, the locations of dark matter effects pass straight through the collision as would the information energy of stellar heated gas and dust. In this way information energy ...

If some of the earliest galaxies are larger and more active than once thought, it could change scientists’ understanding of galaxy formation.

One such example in favour of dark matter comes from the observations of how matter is distributed in the Bullet cluster of galaxies, which is made up of two colliding galaxies about 3.8 billion light ...

These distinctive galaxies have arms that seem to wrap around ... with bright regions where stars are being born, as well as dark, dusty areas. Stars form within the spiral arms due to a logjam ...