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Lunar Ray Project
Grade: 8-adult

Object: To map the bright lunar ray systems.
Methods: Lunar ray systems are best observed under high illumination (near full moon). At these times, participants are to examine the bright ray systems associated with craters. Sketches, photographs, and electronic images (CCD, Video) are all welcome. Example ray systems include Copernicus, Tycho, and Messier A & B. A map of the rays can be produced from these images.
School Instruction: for teachers, this project offers students an excellent opportunity to participate in a scientific project. You might further explore with your students the origin of ray systems (the fine ejecta that is first ejected upon meteor impact), as well as measurement parameters (what is the 'crater diameter:ray system length' ratio; what are the determinants of ray system length).