Details Title: Astronomy Book Vocabulary Description: Chapter 2 Total Flash Cards: 12 Created: 10/06/2008 12:25:48		New Users: To study from this flashcard set, or to create your own your own study flash cards, REGISTER HERE. Existing Users: CLICK HERE. Additional Astronomy Flashcards
Cards in this set: Term rocket Definition a device that expels gas in one direction to move in the opposite direction Term thrust Definition the reaction force that propels a rocket forward Term velocity Definition speed in a given direction Term orbital velocity Definition the velocity a rocket must achieve to establish an orbit around a body in space Term escape velocity Definition the velocity an object must reach to fly beyond a planet’s or moon’s gravitational pull Term satellite Definition an object that revolves around another object in space Term space shuttle Definition a spacecraft that can carry a crew into space, return to Earth, and then be reused for the same purpose Term space station Definition a large artificial satellite on which people can live and work for long periods Term space probe Definition a spacecraft that has various scientific instruments that can collect data, including visual images, but has no human crew Term rover Definition a small robotic space probe that can move about the surface of a planet or moon Term remote sensing Definition the collection of information about Earth and other objects in space using satellites or probes Term geostationary orbit Definition 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