For decades, physicists have faced one of science’s greatest puzzles: merging quantum mechanics, which describes tiny ...

The Theory of General Relativity, Einstein's description of gravity, explained the motions of everything we see in the universe. One of Einstein's key insights is that matter warps space and time, ...

At cosmological scales, Albert Einstein’s theory of general relativity has given scientists an immensely accurate blueprint ...

A test using atomic clocks will watch superpositions ride Earth’s curved space-time and see if Einstein can play nice with ...

"This work is a step toward understanding how quantum mechanics and gravity work together, a major unsolved problem in ...

THE appearance of a connected account of the Principle of Relativity in our own language will be welcomed by many as an opportunity of acquainting themselves in more detail with the ins and outs ...

The general theory of relativity, Einstein asserted, was now complete. The month leading up to the historic announcement had been the most intellectually intense and anxiety-ridden span of his life.

A team of scientists is proposing a bold alternative to the Big Bang theory, suggesting that our universe may have formed ...

SINCE the relativity theory can be adequately interpreted in the space of Lobachevsky1, may I be permitted to say a few words in connexion with a communication of Sir James Jeans2.

Relativity Space announced Tuesday morning that it has raised an additional $650 million in private capital and that this money will fuel an ambitious agenda of 3D printing large, reusable rockets.