The use of atomic clocks could help bring cosmology and astrophysics "down to Earth" by allowing scientists to investigate the mysteries of dark energy and dark matter in the lab. When you purchase ...

The glow from faster-than-light particles gives us a unique way to explore the universe. Nothing can travel faster than light — in a vacuum. But when light slows down, sometimes matter can blaze past ...

Neutral atoms were formed just a few hundred thousand years after the Big Bang. The very first stars began ionizing those atoms once again, but it took hundreds of millions of years of forming stars ...