The Moon

"Isn't the Moon beautiful tonight?"

- Taco, Four Goes Too Far

The Moon is a celestial body which is in the Earth system. The Moon is not in orbit around the Earth, but instead, Earth and the Moon are in binary planetary, as stated in Sweet Tooth (or triple planet system in that situation).

It has no atmosphere and it is very easily viewed from the Earth's surface, as it is only 400,000 kilometers away (or directly in contact with Earth as of Questions Answered).

It plays a significant role in Four Goes Too Far, where rides in Golf Ball's rocket to the Moon in order to avoid the Twinkle of Contagion, while  latches on and follows.

Taco lets go of the rocket and falls back to Earth mid flight. After they land on the Moon, the rocket malfunctions resulting in Bleh and ABNTT being unable to return. They were stuck there until Questions Answered when Donut united the Earth and the Moon by squishing the Earth through a camera that was capable of transporting matter.

It is currently next to Earth.

Coverage
In Bridge Crossing, both the Earth and the moon got attracted by Needle's Cake, but then Needle's cake got popped by Needle

It appeared in the night sky in Don't Lose Your Marbles and Reveal Novum.

In Get Digging, it was seen when Puffball was flying over the Goiky Canal, multiple moons were seen when they were flying over Planetland.

In Four Goes Too Far, went to the Moon with Golf Ball's rocket to escape the Twinkle of Contagion,  grabbed onto their rocket too. Then they stared at each other to make the twinkle pass to each other, then Taco tells Bell to look at the moon, causing her to get the twinkle. But then the rocket got destroyed.

In The Liar Ball You Don't Want, and  are still on the Moon, they use Robot Flower to control Remote, but fails and  gets up for elimination.

In Questions Answered, Donut makes the whole Earth go through his camera, causing the Earth to be on the Moon. Then 8-ball gets crushed by both the Moon and the Earth for his elimination.

In This Episode Is About Basketball, the Moon appears in the background occasionally throughout the episode.

Geography
The Moon surface varies from light gray rocks to dark gray rocks, and has many craters on it from many asteroids and other space objects hitting it's surface.

The Moon, at least the part that and  visited, did not have any mountains, while the surface itself is quite rough with many several meter high extrusions and craters coming out of the ground.

Trivia

 * It is the only other celestial body other than Earth that members of the BFDI cast have gone to.
 * The Moon is one of two objects in the Earth system. The other is Earth.
 * However, in Sweet Tooth and Bridge Crossing, it is one of three objects, due to Needle's Cake not being destroyed yet.
 * It is presumed that the Moon is a part of Cloudy's planet collection as The Moon in the BFDI universe is technically a planet.
 * In Four Goes Too Far, Bell has the twinkle transmitted to her by glaring at the moon.
 * In BFB 8, Donut transports the whole Earth to The Moon with his new camera, thus making the Moon and the Earth very close to each other.
 * Donut uses the Moon and the Earth to eliminate 8-Ball by squishing him between them.
 * This Episode Is About Basketball is the first episode where the Moon is visible during the day.
 * The moon has been in every season besides IFBD.