Ascension Island a staging point by the British military during the Falklands War. Ascension Island hosts one of four ground antennas (others are on Kwajalein Island, Diego Garcia, and Cape Canaveral) that assist in the operation of the Global Positioning System (GPS) navigational system. NASA operates a Meter Class Autonomous Telescope (MCAT) on Ascension Island for tracking orbital debris, which is potentially hazardous to operating spacecraft and astronauts, at a facility called the John Africano NASA/AFRL Orbital Debris Observatory. In 1501, the Portuguese navigator Afonso de Albuquerque sighted the island on Ascension Day (which fell on 21 May that year) and named
Afonso de Albuquerque With peace concluded, in 1514 Afonso devoted himself to governing Goa and receiving embassies from Indian governors, strengthening the city and encouraging marriages of Portuguese men and local women. At that time, Portuguese women were barred from traveling overseas. In 1511 under a policy which Afonso promulgated, the Portuguese government encouraged their explorers to marry local women. To promote settlement, the King of Portugal granted freeman status and exemption from Crown taxes to Portuguese men (known as "casados", or "married men") who ventured overseas and married local women. With Afonso's encouragement, mixed marriages flourished. He appointed local people for positions