Across
- 2. lines created by the elements of a star
- 5. the total or partial overshadowing of a celestial body by another
- 7. the apparent shift of an object against a stationary object
- 9. a celestial body moving in an elliptical orbit around a star
- 10. brightness
- 11. the process in which the nuclei of atoms fuse together to form larger atoms
- 12. place where comets originate from
- 13. when the sun reaches its lowest or highest point in the sky
- 14. a model of celestial motion in which the earth and all planets revolve
- 17. largest stage of an intermediate mass star
- 18. cool low mass star
- 20. largest stage of a high mass star
- 21. celestial body of hot gasses with a core like a furnace that makes its own energy
- 23. the motion of earth as it orbits the sun
- 26. Energy that is radiated in the form of waves
- 30. astronomer who proposed the universe formed in a single moment of
- 33. optical instrument used to separate light
- 34. a measurement to equal the average distance between the earth and
- 36. last stage of an intermediate mass star
- 37. a cloud of gas and dust in space
- 38. very hot and last stage of a low mass star
- 39. proposes that the universe formed 13.7 billion years ago
- 41. pull
- 44. meteoroids that burn up as they pass through the atmosphere
- 45. the sun
- 46. our galaxy
- 48. rocky chunks broken off of astroids or planets
- 49. distance light travels in a year
- 51. when a high mass stars life ends in a giant explosion
- 53. small rocky bodies in our solar system
- 54. the earliest stage of a star
- 55. distinctive patterns in the sky formed by groups of stars
Down
- 1. a model of celestial motion where the earth is in the center of the
- 3. an overshadowing of earth when the moon is between it and the sun
- 4. the change in sound because of the movement of the source relative to
- 6. an overshadowing of the moon when the earth is between it and the sun
- 8. band of rainbow colours created when white light passes through a prism
- 13. group of planets circling one or ore stars
- 14. diagram that tells the luminosity, size, and temperature of a
- 15. super collider in switzerland used to smash protons together
- 16. people who study objects in space
- 19. place where comets originate from
- 22. the tilt of the earth on its axis
- 24. triangle
- 25. the material that fills space made up of hot gas and dust
- 27. any object in space
- 28. shifting of light from an object towards the red(longer wavelength)
- 29. atmoshphere
- 31. meteoroids that are large enough not to entirely burn up as the pass through
- 32. small body made of rocky material and ice
- 35. a celestial body that orbits a planet
- 39. large sphere of incredibly tightly packed material with an immense
- 40. a technique for determining the distance to a visible object by creating an
- 42. result of a supernova collapsing in on itself
- 43. the motion of earth as its axis from west to east
- 47. streams of high energy particles ejected by the sun
- 50. american astronomer who proposed universe was expanding
- 52. changes of appearances in the moon as it orbits