To construct a warp drive, we'd need 10 times more negative energy than all of the positive energy in the universe. When you purchase through links on our site, we may earn an affiliate commission.

WASHINGTON — The Space Force is eyeing innovative in-orbit refueling technology, but a key question lingers: is it worth the cost, especially when the military is considering a shift towards cheaper, ...

Chief of Space Operations Gen. Chance Saltzman and U.S. Space Forces Indo-Pacific commander, Brig. Gen. Anthony Mastalir, meet at Joint Base Pearl Harbor-Hickam, Hawaii, May 3, 2024. Credit: U.S. Air ...

Most of today’s leading theoretical physicists have a shared perspective about what the next revolution in physics will look like. They think reconciling Albert Einstein’s general theory of relativity ...

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

"The appearance of such structures sheds new light on the sorts of mathematical objects that nature is built from." When you purchase through links on our site, we may earn an affiliate commission.

The following is an extract from our Lost in Space-Time newsletter. Each month, we hand over the keyboard to a physicist or two to tell you about fascinating ideas from their corner of the universe.

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The idea that space-time exists is no more ...