17.Struve

The western edge of Oceanus Procellarum, and the edge visible part of the Moon. Remarkable are the Rays starting at Olbers.

BALBOA - Vasco N. de Balboa. (ca. 1475 - 1517) Spanish conquistador, was the first to cross the Panama istmus, and viewed the pasific, in 1513.

Crater. (71 Km /42 Mi ø ) (Debt: 2,140 m /7,021 ft) (9.1°N, 83.2°W ) Lava flooded.

BARTELS - Julius Bartels. (1899 - 1964) German geophysicist.

Crater. (56 Km /33 Mi ø ) (24.5°N, 89.8°W) Tiny central mountain, worn and eroded wall, with craterlets. Only visible in its entirety from orbit.

BRIGGS - Henry Briggs. (1556 - 1630) English mathematician. Notable for changing the original logarithms invented by John Napier into common (base 10) logarithms.

Crater. (37 Km /22 Mi ø ) (Dept: 1,160 m /3,500 ft) (26°30′ N, 69°06′ W)  Outer rim not circular, outward bulges to the north-northeast and southward. At the midpoint a central ridge, extending to the north.

DALTON - John Dalton (1766 - 1844 ) English Chemist and Physicist.

Crater. (63 Km /37 Mi ø ) (Debt: 2,150 m /7,054 ft) (17.1° N, 84.3°W). Circular formation, terraced walls, lava flooded floor.

EINSTEIN - Albert Einstein. (1879 - 1955). German /Jewish physicist, and creator of the theory of special relativity and relativity.

SELEUCUS - Seleucus of Babylon. (150BC) Greek/Babylonian astronomer. Teaching around 150 BC, he is known to have been a follower of the heliocentric theory of Aristarchus of Samos, which stated that the Earth rotated around its own axis which in turn revolved around the Sun.

17.