Moon and Venus
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Windy skies for the “evening star”
Earth
But it was only in the sixteenth century, around the time of Copernicus, that people began to see Earth as
Super Gelatin
Students measure the angles of refraction of laser light traveling through gelatin, then plot their data to calculate the gelatin’s
Hot Air
Students witness light refracting through air everyday.On hot days, “ripples” rise from the ground or roadways. Stars twinkle in the
Mirror, Mirror
In this activity, students test the Law of Reflection based on experimental evidence.However, the back-silvered glass mirrors present a twist.
What causes the bright halo that sometimes surrounds the Moon?
This bright ring of light is quite common. It’s related to the same process that creates rainbows: refraction. In this
What causes the bright halo that sometimes surrounds the Moon? Read More »
Why aren’t stars visible in the daytime?
Stars aren’t visible during the sunlit hours of daytime because the light-scattering properties of our atmosphere spread sunlight across the
What causes the Northern and Southern Lights?
The famous Northern and Southern Lights — Aurora Borealis and Aurora Australis for those Latin lovers among us — are
Why do stars twinkle?
Because stars are so incredibly distant, to our eyes they appear strictly as points in the night sky. Irregularities in