Across
- 2. A giant cloud of gas and dust
- 3. Star further away look red compared to closer. Shows that the universe is still expanding.
- 6. The star shrinks into the center. Grows 10x bigger
- 7. Shaped with long arms. Flat rotating disk of stars, gas, and dust
- 8. Distinct shape might have been a spiral or elliptical once.
- 9. Density... With inmensity, small. A pulser.
- 13. Bubble of heat and density smaller than an atom. Bubble exploded and the universe filled with clouds of hydrogen and helium
- 14. Forms from supernovas. Gravity is so powerful nothing can escape
- 15. Star collapse and then explodes
Down
- 1. Starts big and gets bigger as the star shrinks into the middle
- 3. Element-rich leftovers of an exploded star gets re-used in the universe.
- 4. Leftover core after the planetary nebula. No more nuclear fusion.
- 5. Part of nebula clump together through gravity.
- 10. Spherical. very long and oblong, smooth and bright. Stars are very old and often red.
- 11. Core shrinks as outer layer of gas "puffs away"
- 12. Longest stage at the sun