Tuesday 29 August 2017

Moon 28th August 2017

"Moon illusion" Mystery!

The Moon looked very big in the sky tonight.

It was very low in the sky, only 4 degrees above the horizon.

This is called the "Moon illusion", which is an optical illusion that causes the Moon to appear larger when near the horizon than it does higher up in the sky.

No-one knows 100% for certain why this happens, neither Ptolemy nor NASA!

Time 22:30.
Distance 250,011 miles.
First quarter phase.
240 degrees SW compass point (azimuth).
Altitude 4 degrees.


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