Time is often treated as constant, but Einstein showed that it isn’t. Speed and gravity both affect how fast time moves, and ...

Last week, we touched upon E=mc2, and how Einstein’s theory of relativity turned the world of physics upside-down. Now, we’re using that theory to show why the very concept of time may not be what you ...

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

Time really does move faster on Mars, but the breakthrough that confirms it did not come from a spacecraft’s stopwatch.

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.

If you’re concerned about getting every microsecond out of life, then you might not want to migrate to Mars. Using extremely ...

We go about our busy days, occasionally glancing at our watch or the clock on the wall. But we seldom stop to think about how ...