Tuesday, September 21, 2010

Date Claimer

Mark your calendars. July 12, 2011 is an auspicious date. This is the day that the planet Neptune will complete its first full orbit since its discovery on September 23, 1846.

Neptune has an orbital period of 164.79 Earth years, so it will be nudging back into the place it was when it was sighted near where Le Verrier predicted it to be. It won't be in the same place in the sky as that night, though, as the Earth will be in a different point in its orbit.

Things move slow out where the Sun is weak and things are cold.

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