1) US astronomer 2) Maria of Coward plays 3) Scottish surname 
[crater] Aitken is a large lunar impact crater that lies on the far side of the Moon, named for Robert Grant Aitken, an American astronomer specializing in binary stellar systems. It is located to the southeast of the crater Heaviside, and north of the unusual formation Van de Graaff. Attached to the southwest rim is Vertregt. To the southe...
1864–1951, U.S. astronomer. · See