Galaxy clusters are the most massive objects in the universe held together by gravity, containing up to several thousand individual galaxies and huge reservoirs of superheated, X-ray-emitting gas. The ...

Astronomers have found a galaxy that shouldn’t exist — one without dark matter. Enormous galaxy NGC 1277 was supposed to help Sebastién Comerón of the University of La Laguna and the Instituto de ...

The density of ordinary matter in rotating disc galaxies can be explained without the need of dark matter, according to Mordehai Milgrom of the Weizmann Institute in Israel. The observed rate at which ...

Two astronomers have performed one of the world's largest astrophysics simulations to date in order to model the growth of galaxies. Using the "Earth Simulator" supercomputer in Japan, which is also ...

Four University of Leicester students have examined the physics behind Nintendo's platforming hit Super Mario Galaxy. Unlikely. The short paper, titled It's a-me Density!, attempts to rationalise the ...

A British physicist says his quantised inertia "new physics" theory explains galaxy rotation without the need for dark matter, further justifying his earlier work proving how the EmDrive works iStock ...

Here's a problem: The universe acts like it's a lot more massive than it looks. Take galaxies, those giant, spinning masses of stars. The laws of motion and gravity tell us how fast these objects ...

The fabric of spacetime may be frothing with gigantic gravitational waves, and the possibility has sent physicists into a tizzy. A potential signal seen in the light from dead stellar cores known as ...