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In this activity, learners use tonic water to detect ultraviolet (UV) light from the Sun and explore the concept of fluorescence.

This is an online activity about what would happen if we could travel at or near the speed of light.

This fun and simple hands-on astronomy activity illustrates the path of light as it reflects off of mirrors and how this is used in telescopes.

In this activity, learners use a flashlight, a glass of water, and some milk to examine why the sky is blue and sunsets are red.

In this activity, learners will make their own prism and use a glass of water to separate sunlight into different colors.

This activity models the way Landsat satellites use a thermal infrared sensor to measure land surface temperatures.