Stellar crosswords!

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Across
  1. 2. Which element are stars burning while they are on the Main Sequence of the HR diagram?
  2. 3. In which part of the Main sequence is our Sun located?
  3. 5. Which stars have the longer lifetimes on the main sequence?
  4. 6. Which are the 7 spectral classes used to classify stars?
  5. 8. If we plot an old stellar cluster on an HR diagram, its Main Sequence will be very ____.
  6. 9. what kind of star will the Sun become at the end of its life?
  7. 10. When all the Hydrogen in a stellar core has been consumed, the core is made of ____ ?
  8. 11. What does the color of a star tell us about the star?
Down
  1. 1. On an HR diagram, where do we find white dwarfs?
  2. 4. Which pushes against gravity and keeps a star stable?
  3. 7. In which type of clouds are stars born?
  4. 8. If the star Alpha Centauri were moved to a distance 10 times farther from Earth than it is now, its parallax angle would get ____.
  5. 11. Where are the most luminous stars located on the Main sequence?