Ancient Astronomy Sun/Moon/Earth Phases Eclipses Solar Lunar Planets Retrograde Prograde Heliocentric Geocentric
Phases of the Moon
New Moon Can’t be seen. Rises with the sun. Sets with the sun. Bright sky and glare prevent it from being seen. Conjunction
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Waxing Crescent The moon rises in the morning. It follows the sun through the day. People notice it as the sun sets.
Waxing Crescent Follows the Sun Closely Rises in the Morning Sets in the Evening Up Most of the Day and Some of the Evening
Waxing Crescent Follows Further Behind Wider Crescent Rises Later Sets Later Up Less Day More Night
Waxing Crescent
Terminator Limb
Waxing Crescent
First Quarter Looks Half Full Called 1 st Quarter ¼ Cycle Complete Rises at Noon Sets at Midnight Up Half the Day and Half the Night
Waxing Gibbous
More than Half Full Rises in the Afternoon Sets after Midnight Up Some of the Day but More of the Night
Waxing Gibbous Wider Gibbous Farther from Sun Rises Later in the Afternoon Sets Later at Night Up Less Day More Night
Waxing Gibbous
Full Moon Looks Full a Few Nights in a Row Only Full One Night Rises as the Sun Sets as the Sun Rises Opposite the Sun Opposition
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Waning Gibbous Less Full Still More than Half Rises in the Evening Sets in the Morning Moon Ahead of Sun Up Mostly at Night but Some of the Day Too
Waning Gibbous Less Full Rises Later Less Night More Day Closer to Sun
Waning Gibbous
3 rd Quarter Looks Half Full Called 3 rd Quarter ¾ Cycle Complete Rises at Midnight Sets at Noon Up Half the Night and Half the Day
Waning Crescent Less than Half Rises After Midnight Sets in the Afternoon Up Some of the Night but Mostly Day
Waning Crescent Thinner Crescent Rises Later Sets Later Up Less Night and More Day
Waning Crescent
Data First Now a Model Moon Receives Light from Sun Just Like Earth
Moon is a Sphere
Sun Illuminates Earth and Moon Sun Moon Orbits Earth
Sun Illuminates Earth and Moon Sun Moon Orbits Earth can’t see conjunction new moon
Sun Illuminates Earth and Moon Sun Moon Orbits Earth crescent
Sun Illuminates Earth and Moon Sun Moon Orbits Earth first quarter
Sun Illuminates Earth and Moon Sun Moon Orbits Earth gibbous
Sun Illuminates Earth and Moon Sun Moon Orbits Earth full opposition
Sun Illuminates Earth and Moon Moon Orbits Earth Sun Farther Away
Sun Illuminates Earth and Moon Moon Orbits Earth Sun Farther Away
Sun Illuminates Earth and Moon Moon Orbits Earth Sun Farther Away
Aristarchus Sun 20 Times Farther Sun and Moon Look the Same Size According to Solar Eclipses Sun 20 Times Bigger Sun Really 400 Times Farther and 400 Times Bigger Sun Much Farther Away and Much Bigger
Ancient Astronomy Sun/Moon/Earth Phases Eclipses Solar Lunar Planets Retrograde Prograde Heliocentric Geocentric