How Soon After Sunset Does the Sky Become Dark? *
AbstractHere's an astronomy project idea from Dr. James Pierce, a professor in the Astronomy Program at Minnesota State University, Mankato: "Determine the length of twilight at different times of the year by observing the time at which certain bright stars first appear and comparing with the sunset time. Beware of variations due to stars appearing at different altitudes. Try using Polaris as a standard. Also note the time at which automatic streetlights turn on. Determine how soon after sunset stars of different magnitude (brightness) appear." (Pierce, 2004) A good book for learning to locate stars of different brightness for this project is The Stars: A New Way to See Them, by H. A. Rey (Rey, 1966) (available at Amazon.com).
Cite This Page
Last edit date: 2017-07-28
- Pierce, J., 2004. "Ideas for Astronomy Science Fair Projects," Astronomy Program, Minnesota State University, Mankato [accessed December 01, 2011] https://mavdisk.mnsu.edu/wp5884kt/scifair.html.
- A great book for learning the constellations is (and yes, this is the same H. A. Rey who wrote Curious George):
Rey, H. A., 1966. The Stars: A New Way to See Them, Boston: Houghton Mifflin.
News Feed on This Topic
Ask an ExpertThe Ask an Expert Forum is intended to be a place where students can go to find answers to science questions that they have been unable to find using other resources. If you have specific questions about your science fair project or science fair, our team of volunteer scientists can help. Our Experts won't do the work for you, but they will make suggestions, offer guidance, and help you troubleshoot.
Ask an Expert
If you like this project, you might enjoy exploring these related careers:
AstronomerAstronomers think big! They want to understand the entire universe—the nature of the Sun, Moon, planets, stars, galaxies, and everything in between. An astronomer's work can be pure science—gathering and analyzing data from instruments and creating theories about the nature of cosmic objects—or the work can be applied to practical problems in space flight and navigation, or satellite communications. Read more
News Feed on This Topic
Looking for more science fun?
Try one of our science activities for quick, anytime science explorations. The perfect thing to liven up a rainy day, school vacation, or moment of boredom.Find an Activity