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Space Exploration

Science activity investigating spectroscopy

CD Spectroscope

Turn an old CD into a spectroscope to analyze light.

Science activity that demonstrates depth perception

Size and Distance

So close, yet so far away.

Science activity that demonstrates light scattering in the atmosphere

Glue-Stick Sunset

Why is the sky blue? That's a sticky question.

Falling Feather

Prove to yourself that Galileo was right.

Science activity demonstrating the phenomenon of light scattering

Blue Sky

Discover why the sky is blue and the sunset is red.

Reggie Watts performing at the Exploratorium

Watch Reggie Watts improvise a song about visiting Mars (or not).

Time on Mars

What time is it on Mars?

Comet Approach Maneuvers

How do you chase a comet—and how do you stop?

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