New multiscale simulations help crack long-standing mysteries behind the enormous radio arcs generated when galaxy clusters ...

New data reveals black hole jets can accelerate at speeds defying all physical laws, leaving astronomers without a clear ...

Using Nasa ’s Fermi Gamma-ray Space Telescope, Professor Tomonori Totani from the Department of Astronomy at the University ...

In the early 1930s, Swiss astronomer Fritz Zwicky observed galaxies in space moving faster than their mass should allow, ...

Scientists may have "seen" dark matter for the first time, thanks to NASA's Fermi gamma-ray space telescope. If so, this ...

If findings are correct, astronomer Tomonori Totani told Newsweek, this may finally solve "the greatest mystery in cosmology.

What was once the leading explanation for dark matter may have simply been underestimating the mass of the particles that ...

Growing up in a small town in Pennsylvania, astronomy and physics Prof. Michael Smutko could see the Milky Way alongside ...

First up, just pointing a rocket at the Sun and blasting as hard as you can would result in a wild miss. The main problem you ...

A new study casts doubt on the universe’s accelerating expansion, suggesting dark energy might be weakening over time.

Welcome to the Department of Physics and Astronomy at the University of Delaware, where the pursuit of scientific discovery and innovation meets cutting-edge research and academic excellence. Our ...