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- Gravity_tractor abstract "A gravity tractor (GT) is a theoretical spacecraft that would deflect another object in space, typically a potentially hazardous asteroid that might impact Earth, without physically contacting it, using only its gravitational field to transmit the required impulse. The gravitational force of a nearby space vehicle, though minuscule, is able to alter the trajectory of a much larger asteroid if the vehicle spends enough time close to it; all that is required is that the vehicle thrust in a consistent direction relative to the asteroid's trajectory, and that neither the vehicle nor its expelled reaction mass come in direct contact with the asteroid. The tractor spacecraft could either hover near the object being deflected, or orbit it, directing its exhaust perpendicular to the plane of the orbit. The concept has two key advantages: namely that essentially nothing needs to be known about the mechanical composition and structure of the asteroid in advance; and that the relatively small amounts of force used enable extremely precise manipulation and determination of the asteroid's orbit around the sun. Whereas other methods of deflection would require the determination of the asteroid's exact center of mass, and considerable effort might be necessary to halt its spin or rotation, by using the tractor method these considerations are irrelevant.".
- Gravity_tractor wikiPageExternalLink 070217-asteroid-impact.html.
- Gravity_tractor wikiPageExternalLink www.b612foundation.org.
- Gravity_tractor wikiPageExternalLink article.ns?id=dn8291.
- Gravity_tractor wikiPageID "18272728".
- Gravity_tractor wikiPageRevisionID "605868691".
- Gravity_tractor hasPhotoCollection Gravity_tractor.
- Gravity_tractor subject Category:Planetary_defense.
- Gravity_tractor subject Category:Spaceflight_concepts.
- Gravity_tractor type Abstraction100002137.
- Gravity_tractor type Cognition100023271.
- Gravity_tractor type Concept105835747.
- Gravity_tractor type Content105809192.
- Gravity_tractor type Idea105833840.
- Gravity_tractor type PsychologicalFeature100023100.
- Gravity_tractor type SpaceflightConcepts.
- Gravity_tractor comment "A gravity tractor (GT) is a theoretical spacecraft that would deflect another object in space, typically a potentially hazardous asteroid that might impact Earth, without physically contacting it, using only its gravitational field to transmit the required impulse.".
- Gravity_tractor label "Gravity tractor".
- Gravity_tractor sameAs m.04cwzsl.
- Gravity_tractor sameAs Q5598088.
- Gravity_tractor sameAs Q5598088.
- Gravity_tractor sameAs Gravity_tractor.
- Gravity_tractor wasDerivedFrom Gravity_tractor?oldid=605868691.
- Gravity_tractor isPrimaryTopicOf Gravity_tractor.