| A | B |
|---|
| Bigger Dipper | Constellatioin in Ursa Major |
| Little Dipper | Ursa Minor, has polaris in it |
| Vega | one of the brightest stars in the night sky |
| Milky Way | Pale band of light from the east to the south west |
| Polaris | The pole star |
| Westward | the directions stars appear to move |
| Longitude and Latitude | Terrestrial coordinates |
| Coordinate system | Set of numbers used to locate something |
| Zero Point | All system coordinates begin here |
| Great Circle | Divides a sphere into two equal parts |
| Latitude | Measured from the earth's equator |
| Longitude | Measured from the Prime Meridian |
| Prime Meridian | Line that passes through Greenwich England |
| Equator | Only latitudinal great circle |
| Zenith | Point directly above the observer |
| The celestial Sphere | Imaginary clear background surrounding the earth |
| One 360th of a circle | One Degree |
| One 60th of a degree | One minute of arc |
| One 60th pf a minute of arc | Second of arc |
| Horizon system | The sky coordinate system |
| Celestial Horizon | The great circle located 90degrees from the zenith |
| Altitude | The angular distance above the celestial horizon |
| Azimuth | Angle measured eastward from north to directly below an object |
| Circumpolar Stars | Move in circular paths around polaris |
