Across
- 2. a body of charged gas that emits energy
- 5. the day of the year when day and night are the same
- 6. a meteroid that enters earths atmosphere and burns up
- 7. a smaller recognizable part of a constellation
- 8. everything that physically exists
- 9. measure of horizontal position
- 11. a path along which an object travels in space
- 14. when an object blocks out another object
- 15. a body that orbits one or more stars
- 16. the study of objects in space
Down
- 1. any object that orbits a planet
- 3. a rock that orbits the sun
- 4. a group of stars that resemble a form
- 7. measure of vertical position
- 10. an object of ice and dust that orbits the sun
- 12. a collection of stars held together by gravity
- 13. a cloud of gas and dust in space