first quarter moon
Quick Summary
The first quarter moon is a lunar phase where half of the Moon's surface appears illuminated from Earth. This occurs when the Moon is at a right angle to the Sun as viewed from Earth.12
The lunar cycle includes eight phases: new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, and waning crescent. The first quarter phase signifies that the Moon is halfway through its cycle of illumination, moving from a new moon towards a full moon.12
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phaseFirst and last quarter, in which half the Moon appears illuminated, occur when the Moon is at a right angle with respect to the Sun when viewed from Earth. The waxing and waning crescent phases occur when about one-fourth of the Moon is illuminated, and…
Read MoreFirst and last quarter, in which half the Moon appears illuminated, occur when the Moon is at a right angle with respect to the Sun when viewed from Earth. The waxing and waning crescent phases occur when about one-fourth of the Moon is illuminated, and…
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eight phases: new, waxing crescent, first quarter, waxing gibbous, full, waning gibbous, last quarter, and waning crescent. New moon occurs when the Moon is between Earth and the Sun, and thus the side of the Moon that is in shadow faces Earth. Full moon occurs when the Moon is on…
Read Moreeight phases: new, waxing crescent, first quarter, waxing gibbous, full, waning gibbous, last quarter, and waning crescent. New moon occurs when the Moon is between Earth and the Sun, and thus the side of the Moon that is in shadow faces Earth. Full moon occurs when the Moon is on…
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