Though invisible, dark matter has a strong pull on space. Its presence bends spacetime, changing the paths of light nearby.

The Andromeda Galaxy, our Milky Way’s colossal neighbor, lies 2.5 million light-years away yet shines visibly in dark skies.

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

This NASA/ESA Hubble Space Telescope image features the galaxy cluster Abell 209.ESA/Hubble & NASA, M. Postman, P. Kelly A ...

Dark matter is being thrown off the table with this new theory - simpler, and it relies on something that can be seen. Cosmic ...

A new galaxy was found with 10,000 more of unseen mass than the Milky Way. Now, scientists are wondering if there are more of ...

There may be many more satellite galaxies in the Milky Way than have been observed, according to new Durham University ...

New simulations suggest that dozens of ultra-faint “ghost” galaxies may be orbiting the Milky Way, hidden from current ...

A new study published in the Journal of Cosmology and Astroparticle Physics (JCAP) proposes that the core of our galaxy is full of an all-new category of star called a dark dwarf—and that these not-so ...