By David M. Harland
In 'Paving the best way for Apollo 11' David Harland explains the trap of the Moon to classical philosophers, astronomers, and geologists, and the way NASA got down to examine the Moon in instruction for a manned lunar touchdown undertaking. It focuses quite at the Lunar Orbiter and Surveyor missions.
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Extra resources for NASA's Moon Program: Paving the Way for Apollo 11
However, he undertook a series of experiments to investigate how craters may have formed. First he dropped heavy balls into tightly packed wet clay, and examined the imprints that they made. He also heated alabaster until it bubbled, and then let it set so that the last bubbles to break the surface produced craters. However, just as Hooke could not imagine where the projectiles could have come from to scar the Moon so intensively, nor could he conceive how the surface could have been sufficiently hot to blister on such a scale.
In 1651 he published Almagestum Novum, with a whole-disk map of the Moon that was 28 cm in diameter and was based on observations made by his pupil, Francesco Maria Grimaldi. Although the map was little better than that by Hevelius, its historical significance was the nomenclature. g. Oceanus Procellarum and Mare Tranquillitatis. Craters were named after astronomers and philosophers, including Riccioli and Grimaldi. The despised Copernicus was assigned a crater in Oceanus Procellarum ± the Ocean of Storms.
In September 1949 the Soviets exploded an atomic bomb ± at least 3 years earlier than the US had expected. Although the Soviet bomb was not yet a weapon, it was evident that America would soon lose its monopoly. In early 1950 President Harry S. Truman authorised the hydrogen bomb. In 1951 funding was made available for preliminary work for what would become the Atlas intercontinental-range ballistic missile. The hydrogen bomb test at Eniwetok Atoll on 1 November 1952 was not a viable weapon, because it weighed 60 tonnes.
NASA's Moon Program: Paving the Way for Apollo 11 by David M. Harland