Space-based solar power
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Space-based solar power is the concept of collecting solar power in outer space with solar power satellites and distributing it to Earth. Its advantages include a higher collection of energy due to th
NASA Integrated Symmetrical Concentrator SPS concept
Artist's concept of a solar power satellite in place. Shown is the assembly of a microwave transmission antenna. The solar power satellite was to be located in a geosynchronous orbit, 35,786 kilometres (22,236 mi) above the Earth's surface. NASA 1976
Artist's concept of a solar disk on top of a LEO to GEO electrically powered space tug.
L5 Society
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The L5 Society was founded in 1975 by Carolyn Meinel and Keith Henson to promote the space colony ideas of Gerard K. O'Neill.
Space-based solar power
…form of energy (such as microwaves) which can be transmitted through the atmosphere to receivers on the Earth's surface. In the 1970s, groups like the L5 Society promoted space-based solar power for civilian energy. They soon recognized the technology potential as a directed energy weapon for ballistic missile…
A diagram showing the five Lagrangian points in a two-body system, with one body far more massive than the other (e.g. Earth and Moon). In this system L3–L5 will appear to share the secondary's orbit, although they are situated slightly outside it.
Artist's conception of a space habitat called the Stanford torus, by Don Davis.
NASA concept art from 2001 of an envisioned lunar mining facility.