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Rare Twilight Glow Show Tonight As Autumn Starts On Night Of Full Moon

September 22, 2010

Wow.  (This blog is so much more than politics!)

I think the clouds here in Madison are going to be a problem.  For many others something very unique can be viewed.  If anyone has pictures of the event please post.

The action begins at sunset on Sept 22nd, the last day of northern summer. As the sun sinks in the west, bringing the season to a close, the full Harvest Moon will rise in the east, heralding the start of fall. The two sources of light will mix together to create a kind of 360-degree, summer-autumn twilight glow that is only seen on rare occasions.

Keep an eye on the Moon as it creeps above the eastern skyline. The golden orb may appear strangely inflated. This is the Moon illusion at work. For reasons not fully understood by astronomers or psychologists, a low-hanging Moon appears much wider than it really is. A Harvest Moon inflated by the moon illusion is simply gorgeous.

The view improves as the night wears on.

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