Across
- 1. The shift or movement of an object nearby against a distant background when it is viewed from two different positions
- 3. When a moon's phase is becoming smaller.
- 5. planet with the most moons in our solar system.
- 9. __________ magnitude - How bright an object looks from earth.
- 10. A place in space where gravity pulls so much that light can’t escape
- 12. composed of particles that do not absorb, reflect, or emit light, so they cannot be detected by observing electromagnetic radiation
- 14. An astronomical unit of about 3.26 light years
- 15. When the earth’s shadow is cast upon the moon
- 17. a stream of particles and energy emitted from a star.
- 20. An object that makes looking into the sky and seeing stars, planets, moons, etc. easier
- 21. __________ magnitude - An object's actual brightness.
- 22. A planet that is made up of gas and ice.
- 23. When moons match their rotation so they only show one face for the whole orbit.
- 24. The process in which the sun generates energy.
Down
- 2. The distance that light travels in a year (6 trillion miles)
- 4. lowest layer of earth’s atmosphere.
- 6. When a star ends its life with a big explosion
- 7. When the moon’s shadow is cast upon earth
- 8. smallest planet in our solar system.
- 11. When a moon's phase is becoming bigger.
- 13. A rocky planet, highly dense.
- 16. When planets appear too backtrack in the sky
- 18. Giant clouds of dust that come from a previous dead star, or new star.
- 19. first person to step on the moon.