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 ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. General relativity has withstood perhaps its toughest challenge to date. The theory, which Albert ...

For over 100 years, two theories have shaped our understanding of the universe: quantum mechanics and Einstein’s general relativity. One explains the tiny world of particles; the other describes ...

Einstein's theory of general relativity may be over 100 years old, but a 16-year-long investigation of extreme stars has shown that it is still the best description of gravity we have. An ...

Relativity will expand its presence at NASA's Stennis Space Center with additional test stands and offices to support work on its Aeon R engine. Credit: Relativity Space WASHINGTON — Launch vehicle ...