Titan is known to be the second biggest moon in the solar system. The different planets have their own moons and this particular moon rotates around Saturn. Titan is known to be bigger than the very own moon that we have here on Earth. In fact, it is so big that it is even bigger than Mercury which is the closest planet to the sun.
Titan is known to be made out of 90% Nitrogen. The rest of the percentage is composed of various things. Since this moon is big, it also has some mountains. The temperature here is so cold that the mountains are known to have some ice on top.