Astronomy

3. A cycle of changes the moons appearance undergoes
4. A constellation in the northern sky, also called Ursa Major
7. Galaxy that contains our solar system
8. The periodic change in sea level due to the moon and the sun
10. A natural light display in the Earth's sky, predominantly seen in the high-latitude regions
11. A unit of length used to express astronomical distances and measures
13. The path the sun, moon, and planets take across the sky as seen from Earth

1. Causes the perceived rising and setting of the sun
2. A group of stars forming a recognizable pattern
5. A star that is almost directly above the North Pole
6. This occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight
9. The apparent change in the suns position in the sky
12. One of Jupiter's moons that may hold liquid water