eclipses 5/19/11 20-2c pgs. 552-553 in: which two planets do not have moons? why not?
TRANSCRIPT
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Eclipses 5/19/1120-2c pgs. 552-553
•IN: Which two planets do not have moons? Why not?
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Eclipse – occurs when the shadow of one celestial body falls on another.
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Lunar eclipse - happens when the Moon passes through the shadow of the Earth.
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Lunar Eclipses
•During a lunar eclipse the moon can look red.
•Lunar eclipses can occur only at full moon.
•Everybody on the night side of the Earth can see the lunar eclipse.
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Lunar Eclipse
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Solar eclipse - happens when the Moon comes between the Earth and the sun.
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Solar eclipses
• Solar eclipses can occur only at new moon.
• Only people in the shadow can see the eclipse.
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Solar Eclipse
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Solar Eclipse from the Moon
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Ecliptic plane
Sun Earth
MoonMoon’s orbital plane
Why don’t we see solar and lunar eclipses every month?
The Moon’s orbit around Earth is inclined about 5 degrees to Earth’s plane of orbit around the Sun.
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•OUT: During which moon phase does a solar eclipse occur?