"Even though most physicists believe that the speed of light is as fast as anyone can go, Einstein's theory of special relativity does not rule out faster-than-

The idea that the speed of light is a constant - at 186,000 miles per second - is one of the few scientific facts that almost everyone knows. That constant - c-

Introduces the superstring theory that attempts to unite general relativity and quantum mechanics.

While the theory of special relativity is often associated with the idea of traveling faster than light, this book shows that in all these cases subtle forces o

What's faster than a cheetah?—no animal on earth can run faster. But a peregrine falcon can swoop faster than a cheetah can run. And the falcon can't compare