Astronomy

1. One of Jupiter's moons that may hold liquid water
8. This occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight
9. A group of stars forming a recognizable pattern
11. A cycle of changes the moons appearance undergoes
12. Galaxy that contains our solar system
13. The apparent change in the suns position in the sky

2. A natural light display in the Earth's sky, predominantly seen in the high-latitude regions
3. The periodic change in sea level due to the moon and the sun
4. A star that is almost directly above the North Pole
5. The path the sun, moon, and planets take across the sky as seen from Earth
6. Causes the perceived rising and setting of the sun
7. A constellation in the northern sky, also called Ursa Major
10. A unit of length used to express astronomical distances and measures