Space Vocabulary #1

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Across
  1. 2. scientists who discovered cosmic microwave radiation
  2. 7. the distance light travels through space in one year
  3. 8. A graph which plots the temperature of a star against the luminosity of the star
  4. 10. A process that occurs in stars in which the nuclei of atoms are pushed together until they combine, releasing tremendous amounts of energy
  5. 11. A large cloud of gas and dust in space where stars and planets are formed
  6. 12. celestial body resembling a small planet but lacks the criteria
  7. 13. theoretical stellar remnant of a white dwarf
  8. 15. A large body of gas which is held together by gravity and emits light and energy through nuclear fusion
  9. 17. leftover radiation from the Big Bang or the time when the universe began
  10. 18. The brightness of a star
  11. 20. A large collection of stars, gas, and dust held together by gravity
  12. 21. Space and everything in it including all matter and energy
Down
  1. 1. A hot dense core of matter that remain from the collapse of a low mass star
  2. 3. Scientist who suggested the Big Bang Theory
  3. 4. A collection of planets and other objects that orbit a central star
  4. 5. A small, incredibly dense ball of packed neutrons left over from the collapse of a supergiant star
  5. 6. A stable star which is actively fusing hydrogen and is shown in a diagonal pattern within a H-R diagram
  6. 9. A gigantic explosion in which a high-mass star throws its outer layers into space leaving only its core
  7. 13. an invisible object which remains after the collapse of some supergiant stars, with gravity so great that visible light cannot escape it
  8. 14. A large star with low temperature and high brightness
  9. 16. a theoretical repulsive force that counteracts gravity and causes the universe to expand at an accelerating rate.
  10. 19. celestial body moving in an elliptical orbit around a star