A photon emitted from a star a billion light-years away arrives at a telescope having experienced no time whatsoever. Not ...

Albert Einstein's general theories of relativity have been used to create tiny microscopic robots that can essentially "swim" ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Two cutting-edge atomic clocks — the most accurate ever ...

Researchers have developed a method for steering microscopic swimming robots using light patterns and the principles of Einstein's theory of relativity. The technology is a potential first step toward ...