# O’Neill Cylinder

In space colonization, an O'Neill cylinder is a cylindrical shaped space habitat. The concept was first proposed by American physicist and space visionary Gerard K. O'Neill in his 1974 book The High Frontier: Human Colonies in Space.

The O'Neill cylinder is a cylindrical shaped space habitat that was first proposed by American physicist and space visionary Gerard K. O'Neill in his 1974 book The High Frontier: Human Colonies in Space. The concept is based on the idea of using a rotating cylinder to create artificial gravity.

The cylinder would be spun around its central axis to create the artificial gravity. The cylinder would be large enough to accommodate a large number of people and would be divided into different sections, each with its own environment. The cylinder would be self-sufficient, with its own food and water supplies, and would be able to recycle all of its waste.

The O'Neill cylinder is just one of many possible designs for a space habitat. Other designs include the Stanford torus, the Bernal sphere, and the cylindrical-shaped rotating space station. How big would an O'Neill cylinder be? An O'Neill cylinder would be very large. The original design called for a cylinder that was 6 miles (9.6 km) in diameter and 20 miles (32 km) long, but it could be much larger. The largest O'Neill cylinder ever built was the New Mombasa Habitat in Kenya, which was 12 miles (19.2 km) in diameter and 24 miles (38.4 km) long. What if we built an O'Neill cylinder? If we built an O'Neill cylinder, it would be an enormous space station that would be able to accommodate a large number of people and provide them with a comfortable living environment. The O'Neill cylinder would have artificial gravity, so people would not have to worry about the health effects of living in zero gravity. The cylinder would also have its own ecosystems, so people would not have to worry about the environmental impact of their activities.

How much would an O'Neill cylinder cost? It is difficult to estimate the cost of an O'Neill cylinder as there are many factors to consider, such as the size and number of cylinders, the location and resources of the site, and the level of technology. However, a rough estimate for a small, single O'Neill cylinder (10 m in diameter and 100 m long) built on Earth using current technology would be on the order of \$10 billion.

Is Elysium space station possible? Elysium space station is not possible. The amount of energy required to power and maintain such a station would be prohibitive. In addition, the technology needed to build and sustain such a facility does not currently exist. However, with advances in technology, it is possible that Elysium space station could become a reality in the future.

#### How many people can live on an O'Neill cylinder?

How many people can live on an O'Neill cylinder?

The O'Neill cylinder is a type of space habitat proposed by American physicist Gerard K. O'Neill in the 1970s. The design consists of two counter-rotating cylinders, each with a radius of about two kilometers and a length of about five kilometers. The cylinders are connected by a central shaft, and the whole system rotates to provide artificial gravity.

Assuming that the average person requires about seven square meters of living space, and that each cylinder can accommodate about 10,000 people, then a total of 20,000 people can live on an O'Neill cylinder.