NASA’s Nancy Grace Roman Space Telescope is gearing up to unlock the deepest secrets of the universe with three ...

Astronomers have stumbled upon yet another ghostly galaxy that appears to be devoid of dark matter, the elusive stuff that ...

A team of astronomers and astrophysicists at the Chinese Academy of Science's National Astronomical Observatories has found ...

Three-body problem: A longstanding problem in classical mechanics that tries to calculate the trajectories of three masses ...

Scientists analyzed data from 7 million galaxies and stumbled upon a missing piece of the cosmic puzzle. Thanks to the ...

The fast-moving gas cloud could help explain the so-called missing satellite problem, if the object is what scientists think ...

A blob of gas seen outside the Milky Way could be a type of starless, dark matter–dominated galaxy. Some scientists are skeptical.

Scientists are investigating enigmatic phenomena observed in the center of our galaxy. Telescopes are detecting mysterious radiation, and the gas in the central molecular zone is highly ionized. Could ...

In simplest terms, the rate at which the universe expands on paper doesn’t match actual astronomical observations. That speed ...

In the vast universe, galaxies rotate in ways that don’t make sense if only visible matter is considered. For almost a century, scientists have tried to explain this by searching for a hidden force ...

Every galaxy we can see is believed to sit at the center of a huge cloud of invisible material called a dark matter halo. These halos stretch far beyond the edges of the visible stars and gas in a ...