Aseph Hall in 1877 discovered the Mars' two moons, Phobos and Deimos.
1877
Galileo discovered them. Their names are: Io, Callista, Europa and Ganymede. He discovered them in January 1610. == ==Galileo Galilei in 1610.
Galileo discovered four moons of Jupiter, which are now known as Galilean moons. They are Io, Europa, Ganymede and Calisto.
Jupiter has the most moons, 63 confirmed that are in a stable orbit around the planet. There could be more than this though, which have yet to be discovered.
the person that discovered it was james christy on june 22nd 1978
Pluto has three known natural satellites: Charon, first identified in 1978 and two smaller moons, Nix and Hydra, both discovered in 2005.
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John Tombaugh
Pluto's three moons names are Charon, Nix, and Hydra.
Pluto has three natural satelites.Nix,Hydra,and Charon are Plutos moons.
Pluto now has 5 known moons. The main one is Charon. The others are Hydra, Kerberos, Nix and Styx.
Pluto's moon Charon
Pluto has 3 known moons (as of 2011) Pluto's largest moon is Charon. The smaller moons are Nix and Hydra.
Venus does not have any moons, so they couldn't be discovered.
Mercury has no moons.
No moons have been discovered that orbit Venus.