Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that ...

Tracking time is one of those things that seems easy, until you really start to get into the details of what time actually is. We define a second as 9,192,631,770 oscillations of a cesium atom.

Christopher Nolan's 2014 sci-fi film Interstellaris something of a modern classic, a film that attempts to make quantum physics digestible to the masses. Its scientific accuracy has been a subject of ...