events
American astronomer Asaph Hall discovers Phobos, one of Mars's moons.
Related Wikipedia articles
Astronomer
Scientist in the field of astronomy
An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, moons, comets and galaxies – in either observational or theoretical astronomy.…Source: Wikipedia (CC BY-SA)
Asaph Hall
American astronomer (1829–1907)
Asaph Hall III 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.Source: Wikipedia (CC BY-SA)
Phobos (moon)
Larger of the two moons of Mars
Phobos is the innermost and larger of the two natural satellites of Mars, the other being Deimos. The two moons were discovered in 1877 by American astronomer Asaph Hall. Phobos is named after the Greek god of fear and panic, who is the son of Ares (Mars) and twin brother of…Source: Wikipedia (CC BY-SA)
Mars
Fourth planet from the Sun
Mars is the fourth planet from the Sun. It is also known as the "Red Planet", because of its orange-red appearance. Mars is a desert-like rocky planet with a tenuous carbon dioxide atmosphere. At the average surface level the atmospheric pressure is a few thousandths of Earth's,…Source: Wikipedia (CC BY-SA)
Moons of Mars
Natural satellites orbiting 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 and Deimos who accompanied their father Ares into battle.Source: Wikipedia (CC BY-SA)
August 18
Day of the year
August 18 is the 230th day of the year in the Gregorian calendar; 135 days remain until the end of the year.Source: Wikipedia (CC BY-SA)