Here is an idea to prove that the Moon Does Not Change Its Size:
Assuming you have clear skies this evening as the full Moon rises the Moon probably will be observed by many as a Super Moon. But even without knowing this have you ever noticed how large the full Moon appears to be as it rises? This large appearing Moon is especially noticeable when, for example, there are trees along your local viewing horizon and the Moon is behind the trees as it rises. This is an optical illusion and while very convincing in appearance it is an illusion that is easily seen as just that – an illusion.
To help correct this idea or to prove to yourself that the Moon is not bigger when it rises or sets look at the Moon through a toilet paper tube or something similar when the Moon is near the horizon, and then a couple of hours later when it is higher above the horizon. As this animated graphic illustrates the Moon is not only the same apparent size on both sightings, it is the same apparent size throughout the night, even as it sets.
Just the Facts:
Full Moon rise at local sunset time – Full Moon set at local sunrise time.
Full Moon will be 13% – 14% larger then the other full Moons of 2014.
Should be brighter when compared with…(presumably other full Moons that one has observed and recorded the apparent brightness to be used as a future reference for comparing with a Super Moon).
Click here to go to the Qué tal in the Current Skies web site for more observing information for this month.