Across
- 2. small rocky body that travels through space
- 7. Body of interstellar clouds; births stars
- 9. A unit of distance that equals 3.26 light years
- 12. Energy released as rays or particles
- 13. Stretch wavelengths; moving away from viewer
- 14. Shorter wavelengths, higher frequency radio
- 16. Protects Earth from charged Sun particles
- 22. Planets appear to move backward (they aren't)
- 23. Belief that Sun is center of our universe
- 24. Shaping of surface due to asteroid impact
- 25. Thin disk of small rock/ice bits orbiting a planet
- 26. Sun's atmosphere; gives color to Sun
- 29. Star system with 2 stars
- 30. Light waves that we can see unassisted
- 33. Space and all matter and energy in it
- 34. A planet outside our solar system
- 38. Phase of moon where Earth can't see moon at night
- 40. frozen dust/rock that orbits the sun; tail glows
- 41. Cosmic formation of atoms
- 43. Bright, distant, old, giant galaxy w/black hole
- 44. The movement of an object around another object
- 46. Growth in size or amount.
- 47. smaller bodies that orbit planets
- 48. Shape of Earth's orbit around Sun
- 49. Longer electromagnetic waves; heat
- 53. Decreasing amount of moon is lit
- 56. Different colors emitted light due to chemicals
- 58. The visible surface of the Sun
- 62. Point of infinitely dense matter; black hole
- 63. Compress wavelengths; moving towards viewer
- 64. Change in position due to change in perspective
Down
- 1. Phase of moon where very little is visible
- 3. Blocking of sunlight to Earth by sun and moon
- 4. True brightness of an object
- 5. wave of light/magnetic energy
- 6. High energy, short wavelength; helps see inside
- 8. Contracting gas/dust; earliest stage of star
- 9. The different shapes of the moon seen from Earth
- 10. Studying origin, evolution, fate of Universe
- 11. The splitting of atoms to release energy
- 15. Predictable pulsating stars; calc. distance
- 17. Spinning motion on a planet's axis; day length
- 18. Violent eruption from sun; disrupts radio signals
- 19. No space; no return from black hole
- 20. Force of attraction between two masses
- 21. Massive bright star
- 24. The outermost layer of Sun's atmosphere
- 27. Longest wavelengths, lowest frequency of all waves
- 28. Star diagram; luminosity vs temp
- 31. Relating to any star
- 32. Neither hemisphere tilted toward/away from Sun
- 35. Disk orbits new star; accretion forms planets
- 36. small rocks/metal that orbit the Sun
- 37. Group of stars that form a pattern
- 39. A meteoroid that hit Earth's surface
- 42. Huge group of stars, star systems, dust, gas
- 45. Relating only to one specific star, our Sun
- 50. High energy, short wavelength; dangerous to humans
- 51. Higher frequencies than violet light
- 52. Dark patches on Sun due to cooler gas
- 54. Earth is at center while planets/stars orbit
- 55. Increasing amount of moon is lit
- 57. Stellar explosion, extremely bright
- 59. Earth most tilted; hemispheres toward/away Sun
- 60. Phase of moon where entire Earth-side moon is lit
- 61. Relating to the moon