"No existing galaxy formation model within our standard cosmological paradigm can currently explain how this galaxy came to ...

"The new model can account for both structure formation and stability, and the key observational properties of the expansion ...

The detection of dark matter, the elusive type of matter predicted to make up most of the universe's mass, is a long-standing ...

Astronomers have long been puzzled by two strange phenomena at the heart of our galaxy. First, the gas in the central ...

The rotating disk galaxy, mostly made up of dark matter, was discovered within a larger cloud of fast-moving hydrogen gas.

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

An extremely bold hypothesis proposes transient temporal singularities remove the need for dark matter and dark energy.

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

If dark matter is creating positrons in the CMZ, those particles will eventually slow down and eventually annihilate with electrons in the environment, producing gamma-rays at exactly 511keV energy.

In the vast universe, galaxies rotate in ways that don’t make sense if only visible matter is considered. For almost a ...

A long-elusive, hypothetical subatomic particle called the axion can be simulated and potentially detected in a type of thin material.

Scientists are investigating enigmatic phenomena observed in the center of our galaxy. Telescopes are detecting mysterious ...