Impactor Spacecraft
Impactor may refer to: * A large meteoroid, asteroid, comet, or other celestial object which causes an impact event * Impactor (''Transformers''), a fictional character * Impactor (spacecraft), a craft designed for high-velocity landing * Impact wrench An impact wrench (also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, windy gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rota ...

Impact Event
An impact event is a collision between astronomical objects causing measurable effects. Impact events have physical consequences and have been found to regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal effect. When large objects impact terrestrial planets such as the Earth, there can be significant physical and biospheric consequences, though atmospheres mitigate many surface impacts through atmospheric entry. Impact craters and Impact structure, structures are dominant landforms on many of the Solar System's solid objects and present the strongest empirical evidence for their frequency and scale. Impact events appear to have played a significant role in the Formation and evolution of the Solar System, evolution of the Solar System since its formation. Major impact events have significantly shaped History of the Earth, Earth's history, and have been implicated in the giant impact theory, formation of the Earth� ...
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Impactor (Transformers)
The Autobots are the main protagonists in the fictional continuities of the Transformers multimedia franchise, and are depicted in a collection of various toys, cartoons, films, graphic novels, and paperback books first introduced in 1984. The Autobots, led by Optimus Prime, are opposed by the Decepticons, the main antagonists in the universe of the Transformers, headed by Megatron. Both Autobots and Decepticons have "sparks", which function as souls and contain their minds and personality. They can transform into machines, vehicles and other familiar mechanical objects, as well as mimic organic lifeforms (Dinobots). Autobots typically transform into cars, trucks and other road vehicles; some exceptions transform into aircraft, military vehicles, communication devices, weapons, or robotic animals. These Autobots are often grouped into special "teams" that have the suffix "-bot" at the end, such as in Dino''bot'' (Decepticon groups' names end in "-con"). In Japan, the Autobots ar ...
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Impactor (spacecraft)
A lander is a spacecraft that descends towards, comes to rest on, the surface of an astronomical body. In contrast to an impact probe, which makes a hard landing that damages or destroys the probe upon reaching the surface, a lander makes a soft landing after which the probe remains functional. For bodies with atmospheres, the landing occurs after atmospheric entry. In these cases, landers may employ parachutes to slow them down enough to maintain a low terminal velocity. In some cases, small landing rockets will be fired just before impact in order to reduce the lander's velocity. Landing may be accomplished by controlled descent and set down on landing gear, with the possible addition of a post-landing attachment mechanism (such as the mechanism used by ''Philae'') for celestial bodies with low gravity. Some missions (for example, Luna 9 and Mars Pathfinder) used inflatable airbags to cushion the lander's impact rather than utilizing more traditional landing gear. When a ...
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