An experiment with a charged molecule of bismuth and carbon reveals how effects from Albert Einstein’s special relativity ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Albert Einstein's theory of general relativity—which explains gravity ...

Time travel has long been a favorite idea in science fiction. Stories about changing the past or visiting the future have ...

For over a century, scientists have thought of time as a fundamental property of the universe. But the more researchers seek ...

Time seems to be one of the most obvious things in the universe: it moves forward, seconds change minutes, and the past ...

The question of how gravity interacts with the quantum world has long perplexed physicists, but a non-quantum theory of space ...

When an object moves extremely fast—close to the speed of light—certain basic assumptions that we take for granted no longer apply. This is the central consequence of Albert Einstein's special theory ...

BOULDER- Black holes, time travel and E= mc^2. They are all related to Albert Einstein's Theory of Relativity. How many of us, though, can actually explain any of it? This year, Einstein's theory ...

How would our world be viewed by observers moving faster than light in a vacuum? Such a picture would be clearly different from what we encounter every day. "We should expect to see not only phenomena ...