Fox News chief political anchor Bret Baier takes viewers on a tour of Forest Service Clock Tower in Washington, D.C. and details the history of the building.

Scientists claim that time travel is possible and humans have already done it, according to the Daily Mail. From H. G. Wells to Christopher Nolan's "Interstellar", the possibility ...

The spins of some early galaxies could be a clue that the entire observable universe exists within a black hole—except, that ...

The speed of light puts an absolute speed limit on the universe ... so would have actually experienced more time passing. And, just as general relativity predicted, when the clocks landed Hafele and ...

Today’s worry is not of a totalitarian government, but a drift into a society where people do not know what is true and lose ...

NASA and SpaceX are launching the company's 32nd commercial resupply services mission to the International Space Station later this ...

“Every other physicist assumed that there was a universal world clock that ... including light. As Weart says, quoting a maxim among physicists, “The general theory of relativity just dropped ...

Optical lattice clocks, the pinnacle of timekeeping, are key to exploring the relationship between quantum mechanics and ...

One hundred years ago, astronomers captured the light of stars behind the sun during ... He used Einstein’s equations describing general relativity—published only months before—to suggest ...

The reason astronauts experience slower aging in space comes down to Einstein’s theory of relativity. In simple terms, time moves slower for objects that are traveling closer to the speed of light ...

proposing an expansion of special relativity that includes observers moving faster than light. This fresh perspective shakes up long-held ideas about cause and effect and invites us to imagine an ...