This rare space wallpaper taken on July 19, by NASA's Cassini spacecraft shows Saturn's rings and our planet Earth and its moon in the same frame.

There's a faint gamma-ray background in the universe, and scientists now think it could be caused by dark matter.

Get ready for a new Roman Empire: A NASA space telescope will detect a staggering wealth of intricate gravitational lenses that could help unlock the mysteries of dark matter.

A new study using the Hubble Space Telescope suggests that we understand dark matter even less than we previously thought.

Dark matter isn’t visible to the human eye, or even telescopes, but there is an ingenious way to map its presence across the universe.

A colossal cluster of galaxies is bending the very fabric of space—and it’s the focus of this week’s breathtaking image from ...

Space Matter is a weekly column that delves into space science and the mechanics of spaceflight. From the latest discoveries in the universe around us to the fits and starts of rocket test flights ...

Because it doesn't interreact with light or electromagnetism, dark matter exists to us only through its influence on visible ...

Mysterious dark matter makes up 85 percent of matter in the universe, and of the remaining 15 percent, scientists couldn’t account for half—until now.

THE most precise map so far of dark matter in our universe was released last week by an international team of astrophysicists.