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- Man-made_structures_visible_from_space abstract "Man-made structures visible from earth orbit without magnification (by mechanical aids such as a camera or binoculars) include highways, dams, and cities. The most commonly cited example, the Great Wall of China, is barely visible from Low Earth Orbit (LEO; under perfect conditions), but not from the moon.Part of the problem in authoritatively answering questions about visibility from space is that such questions are often very vaguely put: Askers frequently do not precisely define how far above sea level their hypothetical or actual observer in space is located. When just speaking of "space", an asker might mean anywhere from the edge of space (Kármán line) at an altitude of 100 kilometers (62 mi) to Low Earth Orbit (160–2,000 km) to Apollo 12's orbit at 290 km (180 mi) to the Moon, which orbits about 381,415 km (237,000 mi) away. The Kármán line is accepted by the Fédération Aéronautique Internationale (FAI), which is an international standard setting and record-keeping body for aeronautics and astronautics, as the boundary between the Earth's atmosphere and outer space.However, a practical definition for the purpose of answering questions on what astronauts generally can see from space would reflect altitudes that manned spacecraft typically orbit the Earth at—often several hundreds of kilometres. Because of the inverse square law, there are major differences in visibility from just above the Kármán line (100+km/62+miles) and e.g. the ISS orbit (~394 km/~245miles).".
- Man-made_structures_visible_from_space wikiPageExternalLink great-wall-of-china-from-space.html.
- Man-made_structures_visible_from_space wikiPageID "27319586".
- Man-made_structures_visible_from_space wikiPageRevisionID "604123398".
- Man-made_structures_visible_from_space hasPhotoCollection Man-made_structures_visible_from_space.
- Man-made_structures_visible_from_space subject Category:Earth_orbits.
- Man-made_structures_visible_from_space subject Category:Megastructures.
- Man-made_structures_visible_from_space subject Category:Urban_legends.
- Man-made_structures_visible_from_space type Line108593262.
- Man-made_structures_visible_from_space type Location100027167.
- Man-made_structures_visible_from_space type Object100002684.
- Man-made_structures_visible_from_space type Orbit108612049.
- Man-made_structures_visible_from_space type Orbits.
- Man-made_structures_visible_from_space type Path108616311.
- Man-made_structures_visible_from_space type PhysicalEntity100001930.
- Man-made_structures_visible_from_space type YagoGeoEntity.
- Man-made_structures_visible_from_space type YagoLegalActorGeo.
- Man-made_structures_visible_from_space type YagoPermanentlyLocatedEntity.
- Man-made_structures_visible_from_space comment "Man-made structures visible from earth orbit without magnification (by mechanical aids such as a camera or binoculars) include highways, dams, and cities.".
- Man-made_structures_visible_from_space label "Man-made structures visible from space".
- Man-made_structures_visible_from_space label "Objetos visibles desde el espacio".
- Man-made_structures_visible_from_space sameAs Objetos_visibles_desde_el_espacio.
- Man-made_structures_visible_from_space sameAs m.0by05cd.
- Man-made_structures_visible_from_space sameAs Q9051514.
- Man-made_structures_visible_from_space sameAs Q9051514.
- Man-made_structures_visible_from_space sameAs Man-made_structures_visible_from_space.
- Man-made_structures_visible_from_space wasDerivedFrom Man-made_structures_visible_from_space?oldid=604123398.
- Man-made_structures_visible_from_space isPrimaryTopicOf Man-made_structures_visible_from_space.