Space Technology

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Across
  1. 3. A material used to protect spacecraft from heat
  2. 5. A telescope with a segmented mirror
  3. 6. The process of a spacecraft entering Earth's atmosphere
  4. 8. A device to measure the speed of light
  5. 9. A type of rocket engine using high-speed exhaust
Down
  1. 1. A propulsion system using ionized gas
  2. 2. A method for reducing spacecraft weight in orbit
  3. 4. A system for tracking satellites and spacecraft
  4. 5. A device that converts solar energy into electricity
  5. 7. The first man-made object to leave Earth's gravity