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Phobos is named after the Greek god of fear and panic, who is the son of Ares (Mars) and twin brother of Deimos. Phobos is a small, irregularly shaped object with a mean radius of 11 km (7 mi). It orbits 6,000 km (3,700 mi) from the Martian surface, closer to its primary body than any other known natural satellite to a planet.
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. [1] He determined the orbits of satellites of other planets and of double stars, the rotation of Saturn, and the mass of Mars.
Asaph Hall discovered Deimos on 12 August 1877 at about 07:48 UTC and Phobos on 18 August 1877, at the US Naval Observatory (the Old Naval Observatory in Foggy Bottom) in Washington, D.C., at about 09:14 GMT (contemporary sources, using the pre-1925 astronomical convention that began the day at noon, [16] give the time of discovery as 11 August ...
Phobos (Ancient Greek: Φόβος, lit. 'flight, fright', [ 1 ] pronounced [pʰóbos] , Latin : Phobus ) is the god and personification of fear and panic in Greek mythology . Phobos was the son of Ares and Aphrodite , and the brother of Deimos .
Did not reach the Moon as intended, but discovered a second radiation belt around Earth. [2] 5.9 kg (13.0 lb) 1959 January 2 Soviet Union: Luna 1: Luna: Partial success: The first spacecraft to reach the vicinity of the Moon, and the first spacecraft to be placed in heliocentric orbit. 361 kg (794.2 lb) February 17 US: Vanguard 2E: Vanguard SLV ...
Human DNA recovered from remains found in Europe is revealing our species’ shared history with Neanderthals. The trove is the oldest Homo sapiens DNA ever documented, scientists say.
Microscopic fragments of volcanic glass found alongside stone tools and animal remains in the same layer of sediment at the Shinfa-Metema 1 site, near Ethiopia’s Shinfa River, show humans were ...
The English suffixes -phobia, -phobic, -phobe (from Greek φόβος phobos, "fear") occur in technical usage in psychiatry to construct words that describe irrational, abnormal, unwarranted, persistent, or disabling fear as a mental disorder (e.g. agoraphobia), in chemistry to describe chemical aversions (e.g. hydrophobic), in biology to describe organisms that dislike certain conditions (e.g ...