Across
- 2. WHAT CAN BE SMALLER THAN AN ATOM
- 3. invisible everything eaters
- 5. there is nothing outside of it
- 6. the big blue-green marble
- 11. star that ate too much
- 12. the source of universal expansion
- 15. our beautiful galaxy
- 16. why did it dye itself red???
- 17. the brightest ball of gas
- 18. biggest explosion in the universe
Down
- 1. cosmic glue
- 4. keeps the universe together
- 7. goodness gracious great balls of gas
- 8. just your everyday matter
- 9. the end state of the sun
- 10. the biggest greenhouse in the universe
- 13. way. too. small.
- 14. pulse,pulse,pulse. All that flashing...