NASA
Nasa: Imagine the Universe: Speed of Earth's Rotation
Presents an informative answer to the question "What is the speed of the turning of the Earth?"
Exploratorium
Exploratorium: Your Age on Other Worlds
How old would you be on Mars? Venus? Have fun plugging in your birthdate to see your age on other planets then read scroll down for a full explanation.
Utah Education Network
Uen: Moon Observations
Create a model of the moon to illustrate the various phases of the moon.
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