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
5th Portuguese India Armada (Albuquerque, 1503) In either case, Ataíde remained in Mozambique, where he would die soon after. On his deathbed, Ataíde wrote his final testament, giving a full and exact account of his time in India, including the travails of Vicente Sodré's Indian coastal patrol in 1503 (placing much of the blame for that debacle on the shoulders of Brás Sodré) and condemning the behavior of António do Campo (for refusing to help him and his shipwrecked crew in Mozambique.) Reduced to two ships, Afonso de Albuquerque and Fernão Martins de Almada (Campo having gone on ahead by himself), set sail out of Mozambique