The dwarf planet Pluto has at least 10 known satellites. There is also a small system of rings of debris that has been recently detected.
Of the eight planets in our solar system, only Mercury and Venus have no known satellites. Furthermore, Pluto has at least four of them.
Actually no satellites have explored Pluto. I am not sure about robots.
No, it is not true that Pluto has 7 satellites. Pluto actually has five known satellites which are Charon, Styx, Nix, Kerberos, and Hydra.
have any robots or satellites ever landed on pluto
Pluto have 2 satelites.
Mercury, Venus, Earth, Mars, Neptune and Pluto.
3, Charon, Nix and Hydra.
a moon
There are 168 known natural satellites (moons) of the 8 major planets. There are also moons around 3 of the 5 dwarf planets (Pluto, Eris, and Haumea). There are more than 200 artificial satellites (or expired satellites) in Earth orbit or scattered throughout the solar system.
Pluto has at least three moons; Charon, Nix, and Hydra.
No missions have yet gone to Pluto, but one is on its way.
cp rox