A new software package detailed by Chinese scientists promises to tell what time it is on the moon, accounting for effects of ...

China has quietly solved a problem that only becomes obvious once you try to live and work off-world: clocks on the moon do ...

Scientists could soon test Einstein's theory of general relativity by measuring the distortion of time. General relativity states that gravity is the result of mass warping the fabric of space and ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a ...