V 1919-om viedol Arthur Eddington expediciu za zatmenim Slnka prave kvôli tomuto ucelu(zaznamenanie gravitacneho ohybu svetelnych lucov Slnkom). copy-paste z wikipedie:
After the war, Eddington travelled to the island of Príncipe near Africa to watch the solar eclipse of May 29, 1919. During the eclipse, he took pictures of the stars in the region around the Sun. According to the theory of general relativity, stars near the Sun would appear to have been slightly shifted because their light had been curved by its gravitational field. This effect is noticeable only during an eclipse, since otherwise the Sun's brightness obscures the stars. Newtonian gravitation predicted half the shift of general relativity.
Eddington's observations confirmed Einstein's theory, and were hailed at the time as a conclusive proof of general relativity over the Newtonian model; the news was reported in newspapers all over the world as a major story.