In past studies, researchers tried to explain the hydrogen ionization through cosmic rays — fast, energetic particles that move through the Universe. However, there were challenges to this explanation ...

These charged particles could then ionize hydrogen gas, potentially creating positively charged molecular clouds like those ...

This energy signature results from the annihilation ... low-mass dark matter particles are responsible for the unusual ...

A strange energy source at the center of the Milky Way may be a new type of dark matter. Scientists found that hydrogen gas ...