query: How many moons does Mars have?
passage: Moons of Mars
The two moons of Mars are Phobos and Deimos.[1] Both were discovered by Asaph Hall in August 1877[2] and are named after the Greek mythological twin characters Phobos (panic/fear) and Deimos (terror/dread) who accompanied their father Ares, god of war, into battle. Ares was known as Mars to the Romans.
passage: Mars
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