Across
- 2. half the size of the sun and they shine with less light
- 4. rapidly rotating neutron stars that blast out pulses of radiation
- 7. a spiral galaxy that contains our solar system
- 11. a group of stars that appear to form a pattern
- 13. a telescope that uses mirrors
- 16. when either the sun or the moon blocks each other
- 19. an object that has survived space travel to land on the earth.
- 21. an extreme amount of energy that may contain a supermassive black hole feeding on gas at the center of a distant
Down
- 1. a huge collection of dust, gas, stars and planets
- 3. daily
- 5. an area of such immense gravity that nothing, not even light, can escape
- 6. cosmic snowballs of frozen gas that orbit the sun
- 8. a doughnut shaped ring of icy objects around the sun
- 9. small bits of matter accumulate and combine with more bits of matter
- 10. everything
- 12. planets that orbit a star
- 14. a giant cloud of dust and gas in space
- 15. phases the phases the moon goes through
- 17. relating to the sky
- 18. is an object in space that entered Earth's atmosphere and burned up
- 20. a regular, repeating path that an object takes around an object.