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

Boston scientists honored at the Breakthrough Prize for gene editing, muons, Pantheon+ and new symmetry theory.

Dive into 25 cosmic mysteries science can't explain, from dark matter to dark energy. Explore the universe's most baffling ...

A Franco-Spanish physics team has found that a hypothetical massive spin-3/2 particle cannot be consistently described without also including gravity. Using standard positivity bounds in a weakly ...

The cosmological constant has been a problem in physics since Einstein, but new research may show why it takes the value that ...