'One of the 2 moons in our solar system larger than Mercury; one orbits Jupiter & one orbits Saturn'
(1 of) Ganymede & Titan
THE SOLAR SYSTEM: One of the 2 moons in our solar system larger than Mercury; one orbits Jupiter & one orbits Saturn
One of the 2 moons in our solar system larger than Mercury; one orbits Jupiter & one orbits Saturn
One of the 2 moons in our solar system larger than Mercury; one orbits Jupiter & one orbits Saturn
THE SOLAR SYSTEM
1 of Ganymede & Titan
THE SOLAR SYSTEM