Physicists are quietly entertaining one of the strangest ideas in modern cosmology: that the cosmos we see might be only half the story. In this picture, a separate “dark” event, a kind of second Big ...

Add Yahoo as a preferred source to see more of our stories on Google. Dark matter may have started hot and cooled during reheating after the Big Bang. (CREDIT: NASA / Goddard Space Flight Center ...

On a clear night, the Milky Way and the Andromeda galaxy look like close neighbors. In space, they really are.

We could go out with a crunch, and not a bang. Contrary to popular belief, our universe may not be constantly expanding after all. A groundbreaking study by South Korean researchers suggests that dark ...

Scientists at Rutgers and collaborators have traced the invisible dark matter scaffolding of the universe using over 100,000 Lyman-alpha emitting galaxies. By studying how these galaxies clustered ...

Astronomers have discovered a nearly invisible galaxy called CDG-2, which blends into the cosmic background and is made up of ...

Researchers at the Department of Energy's Oak Ridge National Laboratory are helping to pave a path for the eventual discovery of dark matter. With new approaches to measurement in the quantum realm, ...

Researchers propose that hydrogen gas from the early Universe emitted detectable radio waves influenced by dark matter. Studying these signals, especially from the Moon’s radio-quiet environment, ...

It’s unclear whether science as a discipline—and scientists as people—will ever be able to answer some questions definitively ...

Computer simulations carried out by astronomers from the University of Groningen in collaboration with researchers from Germany, France and Sweden show that most of the (dark) matter beyond the Local ...