A multi-institutional team of physicists is proposing an experiment to test whether gravity behaves as a quantum entity when ...

Gravitational distortions produced by distant galaxies show a slight—but notable—disagreement with Einstein's predictions.

An international team of researchers has uncovered evidence that astrophysics models of massive stars and supernovae are ...

Atmospheric carbon dioxide was high in the Cretaceous, making the world in general a warmer place. Moreover, the lack of an ...