Space elevator economics — compared and contrasted with the economics of alternatives, like rockets. Costs of current systems (rockets) The costs of using a well tested system to launch payloads are high. Prices range from about $4,300/kg for a Proton launch [cite web… … Wikipedia
Space elevator — A space elevator for Earth would consist of a cable anchored to the Earth s equator, reaching into space. By attaching a counterweight at the end (or by further extending the cable upward for the same purpose), the center of mass is kept well… … Wikipedia
Portal:Business and economics — Wikipedia portals: Culture Geography Health History Mathematics Natural sciences People Philosophy Religion Society Technology … Wikipedia
University of Economics and Innovation — Established 2000 Type Public Chancellor prof. zw. dr hab. Marek Zmigrodzki … Wikipedia
Solar power satellite — A solar power satellite, or SPS or Powersat, as originally proposed would be a satellite built in high Earth orbit that uses microwave power transmission to beam solar power to a very large antenna on Earth. Advantages of placing the solar… … Wikipedia
Colonization of Mars — An artist s conception of the colonization of Mars, with a cutaway showing part of the interior The colonization of Mars by humans is the focus of speculation and serious study because the surface conditions and availability of water on Mars make … Wikipedia
Space fountain — The Hyde design for a space fountain A space fountain is a proposed form of space elevator that does not require the structure to be in geostationary orbit, and does not rely on tensile strength for support. In contrast to the original space… … Wikipedia
National Register of Historic Places listings in Cache County, Utah — Location of Cache County in Utah This is a list of the National Register of Historic Places listings in Cache County, Utah. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in… … Wikipedia
Space tether — Artist s conception of satellite with a tether Space tethers are cables, usually long and very strong, which can be used for propulsion, stabilization, or maintaining the formation of space systems by determining the trajectory of spacecraft and… … Wikipedia
Paternoster — This article is about the lift. For other meanings see Pater Noster (disambiguation). A paternoster in Prague A paternoster or paternoster lift is a p … Wikipedia
