Astronomers utilized the Hubble Space Telescope to achieve the first measurement of gravitational light deflection caused by an extrasolar star, Stein 2051B, a white dwarf, as it passed in front of a ...

FROM an experimental point of view, Einstein's general theory of relativity is at present in an ambiguous position. It is well known that there are three conceivable tests between its conclusions and ...

Because large objects in space have an effect on light, can smaller objects do the same thing? Can something the size of the Earth also influence light and make it bend? Every object in the universe ...

"From the Smithsonian report for 1919". "Reprinted by permission from Philosophical transactions of the Royal Society of London, series A, vol. 220, pp. 291-333 ...