| A | B |
| Constellation contains the North Star | Little Dipper |
| Use the outer edge of this to locate the North Star | Big Dipper |
| Constellations appear to move in this direction | Counterclockwise |
| Angle of elevation equals degrees of latitude | North Star |
| Latitude of Philadelphia | 40 degrees |
| North Star is higher in sky here than in Philly | Fairbanks |
| North Star is lower in the sky here than in Philly | Miami |
| Many students are obsessed with this astrobiologist | Carl Sagan |