Luna (Moon)
Luna - The only natural satellite of Terra, humans have never stepped on it. We haven't sent any satellites near it yet.
History
Like Terra and all the universe, we don't know when Luna was created. That's because it's older than humanity.
The first night when people saw Luna was 12 minutes after EarthMC opened.
Exploration
We haven't stepped on it, and we have never sent a Satellite near it. We don't see its cubeness properly so we can't be sure that Luna is a cube. Luckily BSSA announced they are going to send a satellite into Luna's orbit.
Landform
We can only see half of the silver globe from Terra, so we can't tell much about it.
Partial geography: (zoom the picture for better quality)
Green borders - Southen Crater
Yellow borders - Northen Crater
Red borders - Grand Canyon
Other - Flat surface
Physical Information:
We don't see the cubeness of Luna correctly because of the render distance on EarthMC. We just see the "top" - the closest surface of the Moon.
The best example is when you stand on a very tall tower and look down. You can see a small square - a piece of Terra. Same with Luna's top. The picture below presents it well.
Surface
We don't know yet about Luna's surface, It can be a white concrete, concrete powder, endstone or even something different. BSSA can help us find it out.
Inside
We also don't know about the underground form of the natural satellite. However, we suppose that (like Terra) Luna has a bedrock core.
Gravity
Presumable gravity on Luna = 0.6 of Terra's gravity