…just another reminder of how majestic the local solar neighborhood can be at times…
~~October 7, 2014~~
The Moon does not have its own light, but shines because its surface reflects the Sun’s rays. A total lunar eclipse occurs when the Earth’s shadow blocks all the Sun’s light from directly reaching the Moon’s surface.
~The Earth’s shadow can be divided into 3 parts~
Penumbra – the outer part.
Umbra – darker, central part.
Antumbra – a partly shaded area beyond the umbra.
What happens if the Moon passes through the Earth’s penumbra?
~Sun, Earth and Moon aligned~
For a lunar eclipse to occur, the Sun, Earth and Moon must be roughly aligned in a straight line. If the Sun, Earth and Moon do not align, the Earth cannot cast a shadow on the Moon’s surface and an eclipse cannot happen.
When the Sun, Earth and Moon are not perfectly aligned, only the outer part of the Earth’s shadow covers the Moon. Such an eclipse…
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