Geochemistry of the Solar System I

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Across
  1. 1. Name of a constant, ~70km/s/Mpc
  2. 3. The majority of these are located in the main sequence
  3. 5. Force that contracts stars
  4. 6. The last name of the person who advanced interpretation of stellar spectra
  5. 7. This type of energy is the force that expands stars
  6. 11. The type of meteorite that displays Widmanstatten structure
  7. 13. This is how new atomic nuclei are built
Down
  1. 1. The most common fuel for fusion in a star
  2. 2. Meteorite made of mostly silicate minerals
  3. 4. Sometimes called a “falling star”
  4. 6. Two different isotopes have the same number of this subatomic particle
  5. 8. Hot gas can create this texture on meteorites
  6. 9. Type of nucleosynthesis associated with the Big Bang
  7. 10. The universe is expanding, so we observe this
  8. 12. The evolution and life of a star depends on this