{"slip": { "id": 54, "advice": "The more ideas that you give away, the more ideas that will come to you."}}
{"type":"standard","title":"Orbital spaceflight","displaytitle":"Orbital spaceflight","namespace":{"id":0,"text":""},"wikibase_item":"Q218455","titles":{"canonical":"Orbital_spaceflight","normalized":"Orbital spaceflight","display":"Orbital spaceflight"},"pageid":738178,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/1/1d/Animation_of_AMC-8_trajectory_around_Earth.gif/330px-Animation_of_AMC-8_trajectory_around_Earth.gif","width":320,"height":240},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/1/1d/Animation_of_AMC-8_trajectory_around_Earth.gif","width":560,"height":420},"lang":"en","dir":"ltr","revision":"1259066766","tid":"06509602-a956-11ef-a20c-e5b05a26a03d","timestamp":"2024-11-23T04:47:21Z","description":"Spaceflight where spacecraft orbits an astronomical body","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Orbital_spaceflight","revisions":"https://en.wikipedia.org/wiki/Orbital_spaceflight?action=history","edit":"https://en.wikipedia.org/wiki/Orbital_spaceflight?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Orbital_spaceflight"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Orbital_spaceflight","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Orbital_spaceflight","edit":"https://en.m.wikipedia.org/wiki/Orbital_spaceflight?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Orbital_spaceflight"}},"extract":"An orbital spaceflight is a spaceflight in which a spacecraft is placed on a trajectory where it could remain in space for at least one orbit. To do this around the Earth, it must be on a free trajectory which has an altitude at perigee around 80 kilometers (50 mi); this is the boundary of space as defined by NASA, the US Air Force and the FAA. To remain in orbit at this altitude requires an orbital speed of ~7.8 km/s. Orbital speed is slower for higher orbits, but attaining them requires greater delta-v. The Fédération Aéronautique Internationale has established the Kármán line at an altitude of 100 km (62 mi) as a working definition for the boundary between aeronautics and astronautics. This is used because at an altitude of about 100 km (62 mi), as Theodore von Kármán calculated, a vehicle would have to travel faster than orbital velocity to derive sufficient aerodynamic lift from the atmosphere to support itself.","extract_html":"
An orbital spaceflight is a spaceflight in which a spacecraft is placed on a trajectory where it could remain in space for at least one orbit. To do this around the Earth, it must be on a free trajectory which has an altitude at perigee around 80 kilometers (50 mi); this is the boundary of space as defined by NASA, the US Air Force and the FAA. To remain in orbit at this altitude requires an orbital speed of ~7.8 km/s. Orbital speed is slower for higher orbits, but attaining them requires greater delta-v. The Fédération Aéronautique Internationale has established the Kármán line at an altitude of 100 km (62 mi) as a working definition for the boundary between aeronautics and astronautics. This is used because at an altitude of about 100 km (62 mi), as Theodore von Kármán calculated, a vehicle would have to travel faster than orbital velocity to derive sufficient aerodynamic lift from the atmosphere to support itself.
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