Wednesday, September 30, 2015
STAGES OF A LUNAR ECLIPSE
1) Moon enters penumbra and shadow begins to appear.
2) Moon enters umbra. The Moon now begins to cross into the Earth's dark central shadow, called the umbra. A small dark scallop begins to appear on the Moon's left-hand side.
3) When 75% of the Moon is eclipsed, that part that is immersed in the shadow, begins to very faintly light up. similar to a piece of iron heated to the point where it just begins to glow. Colors at this stage vary greatly from one eclipse to the next. Reds and grays usually predominate, but sometimes brown, blues and other tints are encountered. Tonight, mostly reds and browns.
4) When the last of the moon enters the shadow, the total eclipse begins. Sometimes the Moon almost disappears and at other times it will glow a bright orange as it did this time. Sunlight is scattered and refracted around the edge of the Earth by our atmosphere, allowing us to see the moon during a total eclipse. Because of the recent eruptions of the volcano in Iceland last spring and the volcano in Indonesia in October, some dust may still be floating high above the Earth. As a result, the Moon appeared darker than usual last night.
5) The Moon and Earth's orbit begin to move the shadow away from the Moon and eclipse reverses it pattern.
An interesting fact; the temperature on the Moon drops over 500 degrees F during the eclipse.
There will not be another Super Moon Eclipse until 2033.
PENUMBRAL LUNAR ECLIPSE
A Penumbral Lunar Eclipse occurs when the Sun, Earth and Moon align in an almost straight line. When this happens, the Earth blocks some of hte Sun's light from directly reaching the Moon's surface. the Earth covers part of the Moon with it's shadow and this is known as the penumbra. A ring is formed around the Moon while the rest of the Moon receives direct sunlight and can be as bright as a full Moon.
SUPER MOON
In a full Moon which occurs with the Moon at or near its closest approach to the Earth in its orbit. Before 195, astronomers called it a perigee full Moon. Perigee means "near Earth".
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