Some time travel movies totally miss the mark and create plot holes, while others get the science absolutely right.

Follow the space program since the moon landing in the four-part documentary "Once Upon a Time in Space". Here’s how to watch ...

Time crystals exhibit perpetual motion-like behavior when separated from external energy input, but scientists found a way to ...

Physicists have struggled to understand the nature of time since the field began. But a new theoretical study suggests time could be an illusion woven at the quantum level. When you purchase through ...

What does the passage of time look like for a truly quantum object? The world’s best clocks may soon be able to answer this question, testing how time can stretch and shift in the quantum realm and ...

Time, not space plus time, might be the single fundamental property in which all physical phenomena occur, according to a new theory by a University of Alaska Fairbanks scientist. The theory also ...