We've all heard of relativity, but what is it? How does it relate to light and motion? So we've all heard of relativity, right? But... what is relativity? And how does it relate to light? And motion?

(via Minute Physics) This video covers the General theory of Relativity, developed by Albert Einstein, from basic simple levels (it's gravity, curved space) through to the concepts of how curved ...

Relativity Space had been targeting Wednesday afternoon for the inaugural launch of Terran 1, the largest 3D-printed structure ever built. Reading time 4 minutes Update: 3:38 p.m. ET: Relativity Space ...

For the first time ever, researchers have watched a star race past the supermassive black hole at the heart of the Milky Way, verifying that its motion showed the effects of general relativity, as ...

Relativity Space's Terran 1 rocket lifts off March 22 on its first mission, a test flight called "Good Luck, Have Fun" by the company. Credit: Relativity Space webcast WASHINGTON — Relativity Space’s ...

Einstein's theory of general relativity has passed its toughest test with flying colors, a new study reports. General relativity, which Einstein proposed in 1916, holds that gravity is a consequence ...

The big thinkers at Aperture explain relativity and how it warps the fabric of spacetime. House fails to override Trump's ...

Former Google CEO Eric Schmidt is taking over as the CEO of Relativity Space, a 9-year-old rocket startup, a company spokesperson confirmed in a statement to TechCrunch. This is Schmidt’s first CEO ...