From phone boxes and flux capacitors to black holes and hot tubs, sci-fi has created plenty of ways to explore the fourth ...

A spacecraft traveling at 99 percent the speed of light toward Alpha Centauri would cross 4.3 light-years in what feels like ...

The tiny bots follow patterns of light and "artificial space-time," navigating like craft following the curved space around a ...

The light did not fade the way it was supposed to. After blazing into view about a billion light-years from Earth, the ...

We experience the flow of time because it’s a natural outcome of the basic laws of physics. But we may need to build a whole new model to account for gravity’s influence.

Besides quantum mechanics, another interesting topic in physics is relativity. Let’s take a look at it! Of all the force fields, the gravitational field is the one man has known for the longest time.

AS MUCH AS we may want to, we cannot go back in time. Is this just our current reality, or is the direction of time fixed by the laws of the universe? One clue to explain this “arrow” of time is the ...

Timekeeping on the Moon is a trickier problem than you might think. It’s not just the fact that it doesn’t have a diurnal cycle like Earth does — or that one “day” on the Moon is equal to about 29.5 ...

In the gloomy days of January, time seems to drag. According to the Einstein theory of relativity, it actually does—in a minute amount that means little to anyone except a scientist. During its annual ...