Posted by Sara on Wednesday, February 10, 2010 at 10:34pm.
Eclipses
Occultations
Transits of Mercry and Venus across the face of the sun
Phases of moons
Supernova explosions
Solar flares
Comet impact with another body(rare)
Asteroid impact with another body (rare)
Meteor entering the atmospere
Cosmic ray bursts
thanks drwls :-) I appreciate your help
arrows in the diagram with your velocity as you ride your bike to your friend's house
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