Uncovering the Night Sky

PDF Outline with Possible Worksheet Outlines

This 90-minute meeting guides scouts through the science of the night sky. Activities include learning of star classification, conducting a digital sky scavenger hunt, testing eye biology in a dark room, presenting telescope technology, measuring distance with standard candles, and completing a light pollution audit.

Items Needed:

Projector or large screen connected to a computer
Printed telescope diagrams or photos broken into 4 different systems (e.g., Lenses/Mirrors, The Mount, The Viewfinder, The Tube)
3 of the same Standard white flashlights
Red cellophane sheets and rubber bands
Measuring tape
Smartphone with a free light meter app installed (like Lux Light Meter Pro)
Blank paper, pens, and clipboards
Printed copies of the International Dark-Sky Association (IDA) lighting basics guide

Meeting Outline

0–5 mins: Star Classification Briefing

The moderator delivers a presentation on how scientists classify stars based on color, temperature, and size using Roman numerals and spectral absorption lines.

5–20 mins: Digital Sky Scavenger Hunt

Scouts use Stellarium, a live map of the universe, to hunt for specific celestial bodies such as the Moon, a planet, a double star, a nebula, a star cluster, a red star, and a blue star.
GSUSA Notes: To earn Space Science requirement, Seniors only need to find a few, not all celstial bodies. Cadettes do not need to find any.

20–35 mins: The Biology of Stargazing

Scouts learn how the human eye adapts to light through pupil dilation and rhodopsin production. They test this in a dark room by observing the different effects of red-cellophane covered flashlights versus standard white flashlights on pupil constriction.
GSUSA Notes: To earn Space Science requirement, Cadettes must experiment with both visible (white) and invisible (red light). Seniors need to learn the biology of the eye.

35–55 mins: Telescope Technology Art & Share

Information: Teams are assigned a diagram of a specific telescope component (Lenses/Mirrors, The Mount, The Viewfinder, or The Tube). They have 10 minutes to review the diagram and included facts, then present a 2-minute explanation to the troop on how their technology helps the telescope function.

55–70 mins: The Standard Candle Experiment

Information: Scouts use standard candles (stars of known brightness) as a concept to measure distance in space. They test this by placing identical flashlights at 1 foot, 5 feet, and 10 feet away and measuring the brightness drop using a smartphone light meter app.

70–90 mins: Light Pollution Audit & Action Plan

Information: Scouts learn how artificial light creates skyglow and review the dark-sky friendly checklist. They walk the perimeter of their building to sketch and categorize light fixtures as ‘Good’ or ‘Polluting,’ and draft a written action plan to modify the lighting and conserve the night sky.

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Published on July 14, 2026. Author:

Tia Kennard

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