Across: |
1. | a space telescope that can see stars and galaxies without interference from our atmosphere |
6. | the natural satellite of Earth, visible by reflection of sunlight |
9. | the eighth planet from the sun - gas giant |
10. | tha actual closest star to our Sun - 4.24 ly distant |
11. | once thought to be the closest star - 4.37 ly distant |
13. | the seventh planet from the sun - gas giant |
15. | a dwarf planet too small to be rounded by its own gravity |
16. | the galaxy our solar system inhabits |
17. | when the Moon passes through the Earth's shadow |
18. | a cloud of gas and dust in interstellar space |
19. | a portion of the Earth is covered in a shadow cast by the Moon |
22. | the fifth planet from the Sun and the largest planet - gas giant |
23. | the sun and all the bodies that orbit it |
24. | the region in space between Mars and Jupiter full of asteroids |
25. | the rotational motion of a planet on its own axis |
26. | the line through which a planet spins |
28. | the time period when the Sun is above the horizon |
29. | the four inner planets in the solar system that have rocky surfaces |
30. | pairs of stars that orbit each other |
31. | the planet second closest to the Sun - terrestrial |
32. | an object used to look far into space |
33. | the force operating throughout the universe that causes objects with mass to attract each other |
34. | the next closest galaxy to ours |
35. | massive objects with gravity so strong that nothing can escape, not even light |
36. | a form of matter thought to account for approximately 85% of the matter in the universe |
38. | the third rock from the Sun - terrestrial |
39. | the time it takes the Earth to orbit the Sun once |
40. | a division of the year marked by changes in weather, ecology, and the amount of daylight |
43. | when one object in space blocks an observer from seeing another object in space |
44. | a body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity |
45. | a small icy body that orbits the sun and when close emits a tail |