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Across 1. luminious globe of gas producing its own light and heat by nuclear reactions 8. dense clouds of molecular hydrogen which partiall or completely absorb the light from stars behind them 10. large bright star with a cool surface 11. very small hot star 12. one of the gases that makes up a star

Down 2. very cool faint and small stars 3. explosive death of a star 4. a nebula is made up of this 5. birthplace of a star 6. stars composed mainly of neutrons 7. what neutron stars are made of 9. forms from massive stars at the end of their lifetime