Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. No matter who you are, where you are, or how quickly you’re ...

A researcher throws cold water on a recent effort that purported to eliminate black holes' greatest and most enduring mystery ...

Objects with twice the mass feel twice the attraction ... Lurking in the shadows of gravity was his precious special relativity and the essential concept of space-time, and what made that ...

The concept of a warp drive, famously popularized by science fiction like Star Trek, envisions a faster-than-light (FTL) ...

identified the task of characterizing quasilocal mass — “where one does not need to go ‘all the way to infinity’ in order for the concept to be meaningfully defined” — as the number-one unsolved ...

According to this equation, mass and energy are interchangeable ... published his work on general relativity, mathematician ...

Another concept of Galilean relativity is the addition of velocities ... we are told that the momentum of an object p is equal to the mass times the velocity, but according to special relativity ...

"In order to do this, I figured I needed to know the gravitational field of relativistic mass, since most of the ... several advanced propulsion concepts and experiments, and is now reassigned ...

Einstein’s general theory of relativity is a toolkit for solving problems involving gravity that connects mass and energy with deformations in spacetime. In turn, those spacetime deformations ...

It is divided into: Special Relativity: It deals with the physics of objects moving at constant high speeds. Key concepts include time dilation, length contraction, and the equivalence of mass and ...