There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

We know that planets rotate, but what about the universe as a whole? No, the universe doesn't appear to rotate; if it did, time travel into the past might be possible. Although people throughout ...

Think Daylight Savings Time is bad? At least you don’t live in what scientists are calling the “anti-universe,” a hypothetical mirror to the one we know and loathe — where time runs freakin’ backwards ...

We live in a golden age for learning about the universe. Our most powerful telescopes have revealed that the cosmos is surprisingly simple on the largest visible scales. Likewise, our most powerful ...

Your location in this Universe isn't just described by spatial coordinates (where), but also by a time coordinate (when). It is impossible to move from one spatial location to another without also ...

Time dilation: It’s a staple of science fiction, and whether you’re familiar with the term or not, you’ve probably encountered it in print or film. Fly fast enough to the speed of light, and your ...

Ever since Astronomer Edwin Hubble discovered in 1928 that the great galaxies, thinly scattered through space, are fleeing from one another, scientists have tried to explain the expanding universe, or ...

Your location in this Universe isn't just described by spatial coordinates (where), but also by a time coordinate (when). It is impossible to move from one spatial location to another without also ...

Let’s reimagine the walk of all walks. Not just a neighborhood stroll or a long-distance trek, but a bold journey to the universe’s edge. This isn’t your average hike—it’s an epic quest across time ...