Space Exploration Vocabs

3. A model of the universe that places the sun at the center.
4. Another word for ocular lens.
5. The angle measured clock-wise from north when measuring altitude-azimuth co-ordinates.
7. Locate a celestial body relative to a fixed earth.
12. Another word that means the same as Sun-centered.
13. Determines the fineness of detail a telescope can produce of an object in view.
15. The change of direction of a ray of light, sound, heat passing from one medium to another.
17. A figure that looks like a squashed circle.
18. A device used to measure the altitude of an object.
19. The lens through which you view a magnified object using a telescope.
20. A device used to measure an objects azimuth.

1. grouping of stars that from patterns like objects.
2. The large lens at the front of a telescope.
6. Set of axes that is used to describe the potions or motion of things.
8. Newton's law that states all objects attract all other objects.
9. A model of the universe that places earth at the center.
10. The angle measured above the horizon in degrees when measuring altitude-azimuth co-ordinates.
11. All objects see in the sky.
14. To cast back (heat, light, sound) from a surface.
16. Another word that has the same meaning as Earth-centered.
21. Celestial bodies in our solar system.