In 1919 astronomers Arthur Eddington and Andrew Crommelin captured photographic images of a total solar eclipse. The sun was in the constellation Taurus at the time, and a handful of its stars could be seen in the photographs. But the stars weren't quite in their expected place. The tremendous gravity of the sun had deflected the light of these stars, making them appear slightly out of place. It was the first demonstration that gravity could change the path of light, just as predicted by Albert Einstein in 1915.