Virtual particles may not be real, but they help physicists track how forces move, and allow for incredibly precise ...

In the 30 years since the discovery of 51 Pegasi b, more than 6,000 planets outside our Solar System have been catalogued. Two modern-day explorers explain how.

By using something called a quantum grid, scientists have found a clever way to simultaneously measure momentum and position ...

Hale-Bopp became known as the "great comet" after the previous "great comet of 1811". That comet was visible to the naked eye for around 260 days, and was the record-holder until Hale-Bopp came into ...