Spaceflight Key Terms

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Across
  1. 3. Tubes
  2. 7. and caves formed by lava movement in the moon's distant past. These tubes can serve as shelter from meteorites, radiation, and extreme temperatures
  3. 8. A state of very weak gravity.
  4. 10. A vehicle for driving over rough terrain
  5. 11. A path described by one body in its revolution about another
  6. 12. Shuttle A rocket-launched spacecraft able to land like an unpowered aircraft, used for journeys between Earth and craft orbiting the Earth.
  7. 14. A vehicle, missile, or aircraft which obtains thrust by the reaction to the ejection of fast moving exhaust from within a rocket engine
  8. 15. The locus of all points in the plane at which the sum of the distances from a fixed pair of points is a given constant.
  9. 16. A bowl-shaped depression formed in the soft soil of the moon by the impact of a meteorite or other object.
Down
  1. 1. A vector quantity that includes the speed and direction of an object.
  2. 2. The science of getting ships, aircraft, or spacecraft from place to place.
  3. 4. Mare (plural: Maria Large, dark plains formed by volcanic eruptions. Latin for "seas," early astronomers thought these dark areas on the moon were filled with water. 16% of the moon's surface is covered in maria.
  4. 5. In the U.S., a person who rides in a space vehicle.
  5. 6. gravity Weightlessness.
  6. 9. Space Station (ISS) A joint project of the Canadian Space Agency (CSA/ASC), European Space Agency (ESA), Japan Aerospace Exploration Agency (JAXA), Russian Federal Space Agency, and the U.S.' National Aeronautics and Space Administration (NASA). The ISS represents a permanent human presence in space: it has been manned with a crew of at least two since November 2, 2000. The space station is located in orbit around the Earth at an altitude of approximately 360 km, a type of orbit usually termed low Earth orbit.
  7. 13. A vehicle designed for space flight.