Today: finished notes on the Sun (part II)
Noted planetary distances from the sun in A.U.s
Used A.U. figures from the sun to determine distance from sun in km (using conversion factors)
Calculated time for light to reach Earth from Sun using light speed in space (300,000,000 m/s)
Calculated time for signals to travel from Earth to distant planets and back (as if you were talking with a buddy on Saturn, or controlling the Mars rovers on earth and waiting for video confirmation of what you did...)
Some classes had time to make a telescope.
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