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

The Nancy Grace Grace Roman dream telescope, an ambitious NASA project for researching dark matter and also exoplanet, is ...

An international team of astronomers has discovered a new ghost galaxy, that does not contain dark matter.

Thirty-five years ago, the Hubble Space Telescope was launched into orbit. It's been sending back galactic data and images ...

Intriguingly, ultralight dark matter might be able to turn into photons (light) — and it's through this process that the ...

NASA's Nancy Grace Roman Space Telescope team shared Thursday the designs for the three core surveys the mission will conduct ...

A massive clump of dark matter in the Perseus galaxy cluster is linked to its core by a bridge of dark matter, evidence of a ...

NASA warns that dark energy could freeze the universe into darkness. Learn what the Big Freeze theory predicts for the cosmos ...

A new analysis of the sky has finally confirmed where the missing half of the Universe's visible matter has been hiding.

T he Perseus cluster is enormous. It has a mass equivalent to 600 trillion Suns, and it looks like it has not stopped growing. New evidence suggests that it is undergoing a merging process with ...

Astronomers may have found the long-missing half of the universe's regular matter—and it appears to have been right under our ...