Normally, a plane moves along three rotational axes. “Inertia coupling” takes place when the plane inadvertently moves on two ...

The idea of inertia is that in a vacuum, where there is no friction, objects move along in a straight line at constant speed until you push on them. This tendency was first isolated by Galileo, who ...

A new theory of inertia could explain how NASA is generating thrust with a new drive design, and may even show them how to make it more powerful. Share on Facebook (opens in a new window) Share on X ...

NASA’s controversial EmDrive is a curious development. A reactionless propulsion drive that, by all known laws of physics, shouldn’t work, but it does. Despite successful tests, a number of physicists ...