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

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

Physicists from Imperial College London have achieved a groundbreaking milestone in quantum physics by reimagining the ...

What if time is not as fixed as we thought? Imagine that instead of flowing in one direction—from past to future—time could flow forward or backwards due to processes taking place at the quantum level ...

What does it mean to be to space-time? The seemingly simple question gets to the essence of twentieth-century physics and has driven a hundred-year debate between philosophy and science. In Einstein’s ...

What if, just before we reach the bottom, we find out that reductionism fails? Big things are made of smaller things, and those smaller things are made of smaller things still. That’s reductionism in ...

Atomic clocks record time using microwaves at a frequency matched to electron transitions in certain atoms. They are the basis upon which a second is defined. But there is a new kid on the block, the ...

Scientists have developed the first-ever time crystals that are visible to the human eye, and they could one day make their way onto $100 bills. The time crystals emerge from the kinks that appear ...

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 ...