Try this outside. On a clear night, look up at the sky. Make sure there are no bright lights and wait twenty minutes so that you eyes can adjust to see faint things. Then count the number of red and blue stars.
- Which stars are hotter than the others?
- Which group of stars (red or blue) are more abundant?
Adapted from the Star Light, Star Bright activity on the
Amazing Space (http://amazing-space.stsci.edu) web site.
This activity was developed by Jacqueline Slay, Largo High School, Largo, MD