Materials:

• Clean, empty 15 oz cans (one for each constellation)
• Scissors
• Glue
• Hammer
• Nail
• Flashlight
• Constellation patterns (see below)

Instructions:

1. Print and cut out the constellation patterns.
2. Glue each pattern to the open end of a can and let the glue dry.
3. Place the can on a steady surface with the pattern facing up.
4. Carefully use the hammer and nail to punch holes where the black dots are marked on the pattern. These dots represent the stars.
5. Once all holes are punched, remove the paper pattern.
6. Turn off the lights in the room.
7. Place a flashlight in the can and turn it on. Look at the bottom of the can to see the constellation pattern projected through the holes.

Safety Tips:

• Always hammer on a stable surface.
• Keep fingers away from the nail when hammering.
• Adults should supervise younger Scouts.

Variations:

• Use different can sizes for a variety of constellation patterns.
• Experiment with hole sizes for brighter or dimmer “stars.”
• Try using colored flashlights for added effect.

This activity works best in a dark room for clearer star projections.

For more information, see https://scoutermom.com/24773/pinhole-planetariums/