A new physics paper proposes modifications to Einstein’s theory of relativity that could solve one of the biggest issues ...

General relativity stands as one of the bedrock theories in modern physics. Its strange view of relative time and space has been confirmed by countless experimental and observational tests, from ...

Relativity says the $650 million Series E funding round will allow it to accelerate development of Terran R, a vehicle designed to be fully reusable and carry payloads of more than 20,000 kilograms ...

The revised version of the Terran R features increased performance, but will only reuse the first stage. Credit: Relativity Space WASHINGTON — Relativity Space has decided to retire its Terran 1 small ...