Final

1. an object created by the collapse of a star. its gravitational pull is so strong that nothing can escape it, not even light.
3. a cool spot that forms in pairs on the sun's photosphere
5. when the length of the day is equal to the length of the night, 12 hours, everywhere on Earth except at the poles
7. a body that orbits a star
8. the collection of planets and other bodies that orbit the sun.
9. when Earth casts a shadow on the moon or when the moon casts a shadow on Earth
10. the visible change we see in the moon's brightness and shape
11. a large telescope that orbits Earth collecting valuable data about Earth and space
14. a solid object made of ice or rocks that falls through Earth's atmosphere.
15. move in an elliptical path, like the planets around the sun

2. a ring of objects that orbit the sun outside of Neptune's orbit.
4. the first partially reusable spacecraft
6. a large rock fragment that orbits the sun in a group called the asteroid belt.
8. the explosion of a large star which creates an extremely bright object that can be a billion times brighter than the sun and becomes invisible over time.
12. when Earth's tilt causes the sun to be the greatest distance north or south of the equator.
13. the outermost layer of the sun's atmosphere which is extremely hot and extends outward for millions of miles.