The ancient Greeks speculated that it might be air, fire or water. A century ago, physicists felt sure it was the atom. Today, we believe that the deepest layer of reality is populated by a diverse ...

In recent years, a group of Hungarian researchers have made headlines with a bold claim. They say they’ve discovered a new particle — dubbed X17 — that requires the existence of a fifth force of ...

**Pre-reqs:** None. I intend to talk about forces and force diagrams, but there is a more fundamental question to address first. What is a force? Most texts define it as a push or a pull. That really ...

There may be a fifth fundamental force of the universe that we haven't documented yet — and, according to new research, our best bet of uncovering it may not lie in deep space, but in objects ...

A former NASA engineer working on a propellant-less propulsion drive has claimed that the device can deliver enough thrust to achieve lift in Earth's gravity, an effect which should not take place ...

This story is part of Short Wave's series Space Camp about all the weird, wonderful things happening in the universe. Check out the rest of the series. What does it take to launch into space? Other ...

You're sitting in physics class, working on a traditional problem involving forces and acceleration, when you start to wonder where these terms even came from. Were they just dreamed up to bring ...