![](https://gnitergroup.com/wp-content/uploads/2021/11/21232071_271823886669397_5183804069518414206_n.jpg)
It is a space settlement concept proposed by American physicist Gerard K. O’Neill in his 1976 book
![](https://gnitergroup.com/wp-content/uploads/2021/11/g0foi2d86rj01.png)
The High Frontier:
Human Colonies in Space. O’Neill proposed the colonization of space for the 21st century, using materials extracted from the Moon and later from asteroids
![](https://gnitergroup.com/wp-content/uploads/2021/11/ddqyswl-ed4c8aa9-a87b-4459-a9ad-4db072dcbd74-1024x576.jpg)
The Island Three design, better known as the O’Neill cylinder, consists of two counter-rotating cylinders. They are five miles (8.0 km) in diameter and are capable of being scaled up to twenty miles (32 km) long
![](https://gnitergroup.com/wp-content/uploads/2021/11/maxresdefault-1024x576.jpg)
Recent Comments