Hubble's new image of galaxy cluster Abell 209 reveals over 100 galaxies and gravitational lensing effects from dark matter ...

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

The problem is that, for the gamma rays to be bright enough to detect, the supernova has to be nearby -- within our Milky Way galaxy or one of its satellite galaxies -- and nearby stars explode ...

Unexpectedly bright galaxies, mysterious little red dots, surprisingly massive black holes, and galaxies shaped like pickles or bunches of grapes have been spotted all over the young universe.

Dark matter might sound strange, but it is a well-supported explanation for the universe's mysteries.

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 ...

Now, a group of astrophysicists has upped the ante: Find the tiniest, brightest galaxies near the beginning of time itself, or scientists will have to totally rethink their theories about dark matter.

The earliest galaxies are thought to have formed as the gravitational pull of dark matter, which has been impossible to study directly, slowly drew in enough hydrogen and helium to ignite stars ...

Because dark matter is impossible to study directly, searching for bright patches of galaxies in the early universe could offer an effective test for theories about dark matter, which has been ...

To dark matter and dark energy, add dark galaxies — collections of stars so sparse and faint that they are all but invisible.