Source: wikibot/deimos-moon
= Deimos (moon)
{wiki=Deimos_(moon)}
Deimos is one of the two moons of Mars, the other being Phobos. It was discovered in 1877 by American astronomer Asaph Hall. Deimos is the smaller of the two Martian moons, with a diameter of about 12.4 kilometers (approximately 7.7 miles). Its name comes from the Greek word for "terror," and it is named after one of the twin sons of Ares (Mars in Roman mythology) who accompanied him into battle.