Jupiter
Jupiter has the most moons or satellites in our solar system with a total of 79 known moons.
uranus is the planet that have 27 satellites
Saturn is known for its rings as well as it have 62 Natural Satellites.
Ganymede and Callisto are natural satellites of the planet Jupiter.
As far as is known in mid-2011, that would be Jupiter.
Jupiter
Jupiter holds the record for the most moons in our solar system, with a total of 79 confirmed natural satellites. These moons vary in size, with the four largest being the Galilean moons Io, Europa, Ganymede, and Callisto.
There are no known satellites of Mercury.
Jupiter has the most moons or satellites in our solar system with a total of 79 known moons.
Venus has no known natural satellites (moons).
The blue-green planet with 27 satellites is Uranus. It is the seventh planet from the sun in our solar system and has 27 known moons or satellites.
These are known as moons. Natural satellites that are in orbit around a larger planet.
I don't know of any planet with exactly 21 known moons. The best answer is probably "Uranus" with 27 moons (natural satellites).
Jupiter
Uranus has 13 known rings and 27 known moons, making it the planet with 8 rings and 24 satellites.
uranus is the planet that have 27 satellites
Saturn is known for its rings as well as it have 62 Natural Satellites.