Those "dark atoms" might radically alter the evolution of galaxies and the formation of stars, giving astronomers a new opportunity to understand this mysterious substance.. Dark matter makes up ...

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

"Dark matter could be captured by stars and accumulate inside them. If that happens, it might also interact with itself and ...

P. van Dokkum et al/Nature 2022 Two galaxies found to be free of dark matter, NGC 1052-DF2 and NGC 1052-DF4, are part of a line of 11 galaxies total (shown in insets).

“We were really surprised to find a galaxy without dark matter in 2018. Finding a second one in 2019 was super odd, and we had no explanation,” van Dokkum says. “Now we think we are seeing ...

An ultradiffuse galaxy’s dark matter halo reaches much further out than that of a regular dwarf galaxy, which shouldn’t happen with the collisionless particles proposed by CDM—particles that ...

This Hubble image captures a set of galaxies that are unusual because they seem not to have dark matter. Credit: NASA/ESA/P. van Dokkum, Yale Univ.

But as Carl Sagan liked to say, extraordinary claims require extraordinary evidence. And, according to some researchers, the evidence for these dark-matter-deficient galaxies doesn’t hold up.

Scientists have shown that the dark matter in galaxies follows a 'maximum entropy' distribution, which sheds light on its nature. Skip to main content. Your source for the latest research news.

Astronomers were surprised to find a galaxy that lacks an invisible but essential piece—dark matter. Dark matter, the mysterious theoretical substance that makes up 27 percent of our universe ...

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.

The ghostly object, catalogued as NGC 1052-DF2, thought to be dark matter-free, can only exist alongside galaxies like Segue 1 and Segue 3 in a Universe where dark matter exists, but a galaxy's ...