| astronomy | questions |
| leap year | a year when 4 extra days is added to the calender |
| zenith | point directly above you |
| astrolab | instrement that measures the angle between the horizon |
| absolute magnitude | brightness of a star |
| asteroid | small rocky body that revolves around the sun |
| appartent magnitude | how bright a star appers to a observer |
| calender | system for organizing time |
| asteroid belt | region of solar system that contains most asteroids |
| constellation | a section of the sky that contains reconizable star patterns |
| day | time requierd for earth to rotate once on its axis |
| eclipse | event which the shadow of ones celestial body that falls on another |
| ellipse | a closed curve |
| light year | unit of legnth equal to the distance light travels in space |
| meteriod | a small rocky body that revolves around the sun |
| moon | a natural satilight |
| retrograde rotation | clockwise spin of a planet or moon |
| revolution | elliptical motion of a bodyas it orbits another body in space |
