The south and southeastern rim of Eddington is almost completely gone, leaving only a few ridges and promontories in the maria to trace the outline of the original crater. As a consequence, Eddington is now essentially a bay in the Oceanus Procellarum. The remainder of the rim is worn and irregular, forming a mountainous arc that is widest in the north. The floor is almost free of craters of significance, with the nearly-submerged crater Eddington P lying in the southeast sector. If the crater once had a central peak, it is no longer evident.
Satellite craters
By convention these features are identified on Lunar maps by placing the letter on the side of the crater mid-point that is closest to Eddington crater.
Sir Arthur Stanley Eddington, OM (December 28, 1882 – November 22, 1944) was an astrophysicist of the early 20th century.
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.
In 1920, Eddington, on the basis of the precise measurements of atomic weights by F. Aston, was the first to suggest that stars obtained their energy from nuclear fusion of hydrogen to helium.
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