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In August 1877, the American astronomer Asaph Hall discovered the two moons of Mars using a 660 mm (26 in) telescope at the U.S. Naval Observatory. [56] The names of the two satellites, Phobos and Deimos, were chosen by Hall based upon a suggestion by Henry Madan, a science instructor at Eton College in England.
Asaph Hall III (October 15, 1829 – November 22, 1907) was an American astronomer who is best known for having discovered the two moons of Mars, Deimos and Phobos, in 1877. He determined the orbits of satellites of other planets and of double stars, the rotation of Saturn, and the mass of Mars.
- New-York Central College, McGrawville
- November 22, 1907 (aged 78), Annapolis, Maryland, US
- October 15, 1829, Goshen, Connecticut, US
- Discovery of the two moons of Mars
The two moons of Mars are Phobos and Deimos. They are irregular in shape. Both were discovered by American astronomer Asaph Hall in August 1877 and are named after the Greek mythological twin characters Phobos (fear and panic) and Deimos (terror and dread) who accompanied their father Ares into battle.
These were a network of long straight lines in the equatorial regions from 60° north to 60° south latitude on Mars, observed by astronomers using early telescopes without photography. They were first described by the Italian astronomer Giovanni Schiaparelli during the opposition of 1877, and confirmed by
El interés en Marte y en la posibilidad de que albergue vida se remonta ya a 1877, cuando el astrónomo italiano Giovanni Schiaparelli afirmó haber visto canales por todo el planeta.
2 de oct. de 2015 · Uniform, seemingly networked channels were first observed by astronomer Giovanni Schiaparelli in 1877; George RR Martin defines Schiaparelli’s discovery, and the mistranslation of ‘canals’ not...
