Monday 30 June 2014

lunar apogee

The distance between the moon and the earth varies over an approximately monthly cycle.
This evening at 17.11 BST the moon was at apogee, it's farthest point from the Earth.  In the process, the barycentre which is the centre of shared mass of the Earth and the moon, moves up and down within the Earth itself, an interesting phenomena.  It's interesting to follow these movements and see how they correspond to our experiences and feelings.
The data are here:
https://www.fourmilab.ch/earthview/pacalc.html


p.s. Later in the evening I went fro a walk around the village and saw the sunset crescent of the moon and a deer who stopped to look at me before running off into the fields.

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