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An O'Neill cylinder (also called an O'Neill colony, or Island Three) is a space settlement concept 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. [2]
A Stanford torus interior (cutaway view) Interior view of a large scale O'Neill cylinder, showing alternating land and window stripes. A space settlement (also called a space habitat, spacestead, space city or space colony) is a settlement in outer space, sustaining more extensively habitation facilities in space than a general space station or spacecraft.
Gerard Kitchen O'Neill (February 6, 1927 – April 27, 1992) was an American physicist and space activist.As a faculty member of Princeton University, he invented a device called the particle storage ring for high-energy physics experiments. [1]
Space exploration also gives scientists the ability to perform experiments in other settings and expand humanity's knowledge. [67] Another claim is that space exploration is a necessity to humankind and that staying on Earth will eventually lead to extinction. Some of the reasons are lack of natural resources, comets, nuclear war, and worldwide ...
Space tourism was halted in 2011 when the Space Shuttle was retired and the station's crew size was reduced to six, as the partners relied on Russian transport seats for access to the station. Soyuz flight schedules increased after 2013, allowing five Soyuz flights (15 seats) with only two expeditions (12 seats) required. [258]
This is a timeline of space exploration which includes notable achievements, first accomplishments and milestones in humanity's exploration of outer space.
Columbus Module at the International Space Station, launched into space on the U.S. Space Shuttle mission STS-122 in 2008. The following outline is provided as an overview of and topical guide to space exploration. Space exploration – use of astronomy and space technology to explore outer space. [1]
The image above contains clickable links Size comparisons between current and past space stations as they appeared most recently. Solar panels in blue, heat radiators in red. Stations have different depths not shown by silhouettes. A space station (or orbital station) is a spacecraft which remains in orbit and hosts humans for