Space Unit 1

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Across
  1. 2. The path of an object moving through space.
  2. 4. The process of slowing down and setting down a spacecraft on the surface of its destination.
  3. 5. A circular or elliptical path followed by one body as it revolves around another body.
  4. 6. An oval shape that can represent the orbits of many artificial and natural satellites.
  5. 10. A partially reusable spacecraft that is launched by a rocket and is able to return to Earth and land like a glider (unpowered aircraft). Used for journeys between Earth and spacecraft orbiting the Earth. Recent missions no longer use space shuttles.
  6. 11. A large piece of fabric, usually in a dome shape, that is attached to spacecraft and opens during landing. The parachute creates drag to slow down the spacecraft.
  7. 13. The height above the surface of the earth at which an object is located.
  8. 14. The period of a space flight between launch and landing when a spacecraft is moving in a mostly straight-line path to its destination.
  9. 15. A space station in low orbit around Earth. It was built by multiple countries and serves as a laboratory to conduct experiments in space, which are impossible to replicate on earth
  10. 16. Distance The distance at which a satellite or spacecraft orbits
  11. 17. A system of cables used to separate the descent stage of a spacecraft from its cargo (such as a rover), which is placed at a landing site.
  12. 20. A small, extra rocket on a spacecraft that is fired in the direction of travel before landing. The firing slows the spacecraft.
Down
  1. 1. The speed and direction of a satellite or spacecraft as it orbits.
  2. 3. The thick layer of gasses surrounding Earth and other planets.
  3. 7. Having a period of rotation that matches the Earth's rotation. Geosynchronous satellites stay above the same spot on Earth at all times.
  4. 8. Discarded objects, trash, and other man-made debris left in orbit during space flights.
  5. 9. An object in orbit around a planet or moon in space. An artificial satellite is a human made object that has intentionally been placed in orbit. An example of a natural satellite is Earth’s moon.
  6. 12. A device, usually a long rod or wire, used to send or receive communication signals.
  7. 18. A large bag of strong fabric that is attached to a spacecraft and inflated before landing. Many bags are placed on the craft to cushion the landing on rough terrain.
  8. 19. How “stretched out” an ellipse orbit is in shape. The more eccentric, the more stretched and less circular.