Over 240, as of mid-2010.
There are about 170 known moons in our solar system and probably hundreds of billions more in other solar systems in our galaxy.
153
153
153
No planet in the solar system has that number of moons. There is a gap in numbers between Saturn's 63 known moons and Uranus' 27 known moons.
Depending on the known moons,including Pluto, there are 170 moons in our solar system that scientists have confirmed and observed.
In our solar system, there are no planets thought to have 23 moons. Uranus has 27 known moons, and Neptune has 13. There is no planet in our system with a closer number.
No planet in our Solar System has 21 moons. See related question for information concerning moons in our Solar System
In our solar system, Jupiter, Saturn, and Uranus all have more than 25 known moons.
Out of the planets in our Solar System, Jupiter has the most moons. It has 63 confirmed moons.
In the solar system, Jupiter has the largest number of moons with 39 moons.
The biggest Planet in solar system Jupiter has the most number of known moons. they are 63. including the biggest moon in solar system "Ganymede" along with "Io" , "Europa" etc