Two possibilities exist: either the Universe is finite and has a size, or it’s infinite and goes on forever. Both possibilities have mind-bending implications. In another episode of Guide to Space, we ...

We’ve seen 3D printers coming out with infinite build volumes, including some attempts at patenting that may or may not stall their development. One way around the controversy is to do it in a ...

In quantum mechanics, measuring both the position and speed of a particle at the same time is not possible. To identify a particle's characteristics, physicists introduced the notion of ...