On Earth, knowing the time feels simple. Your phone pings the same second as a GPS satellite and an atomic clock in a lab. Everything is wired together so well that you rarely think about the ...

Clocks do not work the same across the universe and run slower or faster depending on gravity and its strength. Based on the influence of Albert Einstein's theory of general relativity, experts ...

Add Yahoo as a preferred source to see more of our stories on Google. The National Institute of Standards and Technology (NIST) fulfills a vital role in national security: employing the sort of people ...

Stephen Kane, a professor of planetary astrophysics at UC Riverside, was skeptical when he read recent studies that showed the gravitational pull from Mars being connected to Earth’s long-term climate ...