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moon passes entirely through umbra. can only occur at full moon. (can be
penumbral, partial, or total)
why do we see phases of the moon
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lunar phases are a consequence of the moon's 27.3 day orbit around earth
why don't we have an eclipse at every new full moon
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the moon's orbit is tilted 5 degrees to ecliptic plane, therefore we have
about 2 eclipse seasons each year with a lunar eclipse at a full moon and
solar eclipse at a new moon
eclipse
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the earth and moon cast shadows. When either passes through the other's
shadow, we have an eclipse
altitude of celestial pole
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= your latitude
solar eclipse
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Occurs when the Moon passes directly between the Sun and Earth and
casts a shadow over part of Earth. can only occur at new moon. (can be
partial, total, or annular).