earth science
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Planet Information:
Solar System Notes:
Terrestrial or Jovian:
Other Celestial Objects:
Comet ISON rounded the sun on November 28, 2013. It brightened briefly after perihelion. But, by November 30, Comet ISON had faded again
What is happening to the sun?
What is happening to Venus?
What is happening to the comet?
How do you know the object is a comet?
Does the comet's speed change?
When?
Why?
Kepler's Laws
Kepler's First Law:
Kepler's Second Law:
Kepler's Third Law:
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