The moon will look huge again tonight because of its proximity to the horizon. And it's a full moon. And it may have an orange cast. It was really something last night, but tonight's the real deal.
Find your own moonrise/moonset times here:
http://aa.usno.navy.mil/data/docs/RS_OneDay.htmlHarvest moon discussion:
http://www.recordonline.com/apps/pbcs.dll/article?AID=/20061001/LIFE/610010328As the full moon closest to the autumnal equinox, Friday's full moon is the harvest moon. But "harvest moon" is more than a name — there really is something special about the moon at this time of year.
There are several reasons why the harvest moon has captured our popular imagination. First, any full moon is big, bright, and easy to find. The harvest moon, however, tends to traverse the sky relatively close to the horizon. This allows us to see the moon next to familiar objects such as houses and trees, and we can appreciate just how large it really is.
What about the orange color that we associate with the harvest moon?
Actually, the moon always is the same color, but any object can take on an altered hue when near to the horizon. The Earth's atmosphere tends to tint stars, planets, and even the sun toward the reddish end of the spectrum. The lower the object is on the horizon, the greater the effect.
There's more, too. On average, the moon rises about 50 minutes later each evening. Around the time of the harvest moon, though, the difference between consecutive moonrises is a half-hour or less. The combination of these factors — a bright moon, close to the horizon, rising at about the same time for several nights in a row — makes it seem as if we have a full moon for more than one night. We remember the harvest moon as being especially large, luminous and long-lasting.
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