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15 Cards in this Set

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  • Back
a device that expels gas in one direction to move in the opposite direction.
the reaction force that propels a rocket forward.
speed in a given direction.
orbital velocity
the velocity a rocket must achieve to establish an orbit around a body in space.
escape velocity
the velocity an object must reach to fly beyond a planet's or moon's gravitational pull.
any object that orbits around another object in space.
space shuttle
a spacecraft that can carry a crew into space, return to Earth, and then be reused for the same purpose.
space station
a large artificial satellite on which people can live and work for long periods.
space probe
a spacecraft that has various scientific instruments that can collect data, including visual images, but has no human crew.
a small robotic space probe that can move about the surface of a planet or moon.
a place that is empty of all matter.
the condition of experiencing weightlessness in orbit.
space spinoff
an item that has uses on Earth but was originally developed for use in space.
remote sensing
the collection of information about Earth and other objects in space using satellites or probes.
geostationary orbit
an orbit in which a satellite orbits Earth at the same rate as Earth rotates and thus stays over the same place all the time.