GCSE Space

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Across
  1. 2. If a satellite accelerates its orbit becomes _______.
  2. 3. The type of nuclear reaction that occurs in stars
  3. 7. A force directed towards the centre of a curving motion.
  4. 9. The nearest main sequence star
  5. 12. An object that reaches ______ velocity will leave orbit.
  6. 14. The first stage of a star's lifecycle.
  7. 15. The moon is a _______ satellite.
  8. 17. An obejct leaving orbit travels at a _______ to its oringial orbit.
Down
  1. 1. The element that fuels most stars.
  2. 4. An object orbiting another body.
  3. 5. A space station is an ________ satellite.
  4. 6. Cosmic Microwave ________ radiation
  5. 8. The process that forms all elements heavier than iron.
  6. 10. A piece of evidence for the big bang.
  7. 11. ______ star: The left over core of a red supergiant.
  8. 13. A large collection of stars.
  9. 16. The edge of a black hole is the ____ horizon.