Ask someone on Earth for the time and they can give you an exact answer, thanks to our planet's intricate timekeeping system, ...

Einstein’s equations look simple on paper but when physicists follow them to their logical end, the universe becomes far ...

For close to a century, scientists have been trying to marry Albert Einstein’s General Theory of Relativity and quantum theory—our two best bets on understanding the universe on a macroscopic and ...

Why do we call the people in our families relatives? It is because they exist relative to us and us to them. Most of the time we see ourselves as the star in our own stories and others as planets ...

Physicists have demonstrated with unprecedented accuracy that the speed of light remains constant. In 1887, a landmark physics experiment was carried out by American researchers Michelson and Morley.

In 1999, Belgian physicist Chris Van Den Broeck implemented a minor alteration to Alcubierre’s concept by shrinking the ...

We can't see dark matter directly, so studying it pushes the boundaries of our creativity as scientists. How exciting, says ...

The black hole Gargantua is at the center of Interstellar. The 12 potentially habitable planets that can save humanity are ...

A Star Trek–inspired idea by Miguel Alcubierre kicked off decades of theory and experiments as scientists pursue plausible ...

Stars powered by dark matter instead of nuclear fusion could solve several mysteries of the early universe, and we may have ...

New research has uncovered an unexpected flaw in Einstein’s theory of relativity — a gap that no one had the tools to detect ...