Neptune

─ Neptune is made of a thick soup of water (H2O), ammonia (NH3), and methane (CH4) over an Earth-sized solid center.

─ Its atmosphere is made of hydrogen (H2), helium (He) and methane (CH4). The methane gives Neptune the same blue color as Uranus.

─ It has 6 rings, but they're very hard to see.

─ If you weigh 45 kg (100 pounds) on Earth, you would weigh 52 kg (114 pounds) on Neptune.