Questions: 1. What is a constellation? Name 8 of them. 2. What is an asterism? Name 5 of them. 3. How many constellations are located on the celestial sphere? Can all of these constellations be observed from earth at one time? Explain. 4. Describe how to locate the north star. 5. Describe how to locate your zenith, celestial meridian, and the cardinal points. 6. How are stars named scientifically? What are the scientific names for each of the bright stars pointed out in this exercise? What is the "common" name for the star Alpha Leo? .