The sun and planets in the solar system are used to help propel and guide spacecraft to their ultimate destinations. These bodies provide "gravity assists," commonly called "slingshot" trajectories, ...
In our introduction to general relativity, we explain how this theory developed, plus how it explains the motion of the planets, the history and expansion of the universe and the physics of black ...
Gravitational distortions produced by distant galaxies show a slight—but notable—disagreement with Einstein's predictions.
A POPULAR exposition of the doctrine of Relativity and what it implies: for this the world has been crying since the astronomers announced that the stars had proved it true. Here is an excellent ...
The first year of data from the 5,000 robotic eyes of DESI shows Einstein's theory of general relativity is the right recipe ...