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 During Afonso's absence from Malacca, Portuguese who opposed the taking of Goa had waived its possession, even writing to the King that it would be best to let it go. Held up by the monsoon and with few forces available, Afonso had to wait for the arrival of reinforcement fleets headed by his nephew D. Garcia de Noronha, and Jorge de Mello Pereira. While at Cochin, Albuquerque started a school. In a private letter to King Manuel I, he states that he had found a chest full of books with which to teach the children of married Portuguese settlers ("casados")