For more than 300 years, Isaac Newton's simple rule about gravity has held up: the farther apart two objects are, the weaker ...

A new recipe of "quadratic gravity" could help to better define the picture of the Big Bang and the singularity that existed ...

"I had the best life growing up. We had a boat and we'd go fishing every weekend. I was driving at ten, on the beaches and ...

Many TV series start with a specific main character, but over time, fan-favorite side characters and shining ensemble ...

The farthest spacecraft from Earth has shut down another instrument in the hopes of buying time for an upgrade that could ...

Dark matter could be made of "relic" black holes that survived the collapse of previous universes, a new model proposes.

In the chaotic first moments after the Big Bang, ripples in spacetime may have done more than just echo through the ...

By studying galaxy clusters separated by hundreds of millions of light-years, Penn physicist Patricio Gallardo and ...

Major gauges were little changed by an announcement that Israel and Lebanon will extend their ceasefire.

After more than a decade of development, NASA’s Nancy Grace Roman Space Telescope is entering final preparations for an early ...

Black holes formed before the Big Bang may still exist as cosmic fossils, offering new clues about dark matter and the origin ...

J. Colin Hill, an associate professor of physics, was awarded a New Horizons in Physics Prize by the Breakthrough Prize ...