Using a laser and some boiling water,
you can show why planets do not appear to twinkle in the night sky.
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Here's how to show your students why stars twinkle in the night sky!
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A not-all-together sane way of showing a class how retrograde motion works!
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This demonstration shows how atmospheric scattering filters
the colour of the sun during a sunset.
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Read more: Why Are Sunsets Red?
Three ways to show how the space between objects - like galaxies -
is slowly increasing due to the universal expansion.
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Study Science @ SMU!
A podcast that reviews the
Voyager Golden Record!
