American physicist Gerard K. O'Neill designed the space cylinder colony. He had a goal to build the space colonization habitat on the orbit. I watched the movie about Gundam F91. Zeon's Crossbone Vanguard invaded the Earth Federation Colony Frontier VI. Earth Federation's Gundams started to war against Zeon's Crossbone Vanguard where people live in space colony.

The O'Neill cylinder (also called an O'Neill colony) is a space settlement design proposed by American physicist Gerard K. O'Neill in his 1976 book The High Frontier: Human Colonies in Space.[1] O'Neill proposed the colonization of space for the 21st century, using materials extracted from the Moon and later from asteroids. An O'Neill cylinder would consist of two counter-rotating cylinders. The cylinders would rotate in opposite directions to cancel any gyroscopic effects that would otherwise make it difficult to keep them aimed toward the Sun. Each would be 5 miles (8.0 km) in diameter and 20 miles (32 km) long, connected at each end by a rod via a bearing system. Their rotation would provide artificial gravity. I had been watched the science fiction movie and television about Gundam universe : Space colonies since I was a small because I am fan of Japan's Gundam. I watched Gundam's science fiction anime several times. They have different type of mobile suit such as Gundam F91, Victory Gundam, Unicorn Gundam, Gundam Seed, Gundam Seed Destiny, V Gundam , Gundam Z and ZZ...etc

Wernher Magnus Maximilian Freiherr von Braun (March 23, 1912 - June 16, 1977) was one of the leading figures in the development of rocket technology in Germany and the United States. He led Germany's effort to develop a ballistic missile during World War II, and after the war, he successfully planned the U.S. space program from the first satellite launch through the Apollo program's manned flights to the Moon.