Lunar phase
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A lunar phase or phase of the moon is the appearance of the illuminated (sunlit) portion of the Moon as seen by an observer, usually on Earth. The lunar phases change cyclically as the Moon orbits the Earth, according to the changing relative positions of the Earth, Moon, and Sun. The half of the lunar surface facing the Sun is always sunlit, but the portion of this illuminated hemisphere that is visible to an observer on Earth can vary from about 100% (full moon) to 0% (new moon). The lunar terminator is the boundary between the illuminated and unilluminated hemispheres. Aside from some craters near the lunar poles such as Shoemaker, all parts of the Moon see around 14.77 days of sunlight followed by 14.77 days of "night" (there is no permanently "dark side" of the Moon).
- Related: Blue moon, Lunaception, Lunar effect, Lunation, Observing the Moon, Planetary phase, Seven-day week, Tide, Week
| Six Millennium Catalog of Phases of the Moon Six Millennium Catalog of Phases of the Moon eclipse.gsfc.nasa.gov/phase/phasecat.html - Web |
| Virtual Reality Moon Phase Virtual Reality Moon Phase tycho.usno.navy.mil/vphase.html - Web |
| US Naval Service on Moon Phase US Naval Service on Moon Phase www.usno.navy.mil/.../phases-moon - Web |
Gallery for «Lunar phase»
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| Full Moon Names Full Moon Names www.farmersalmanac.com/astronomy/fullmoonnames.html - Web |
| Telescopic moon photos through the phases Telescopic moon photos through the phases www.netaxs.com/~mhmyers/moon.tn.html - Web |
| Current Moon Phase Current Moon Phase www.moonphaseinfo.com - Web |
| The Length of the Lunar Cycle The Length of the Lunar Cycle www.sym454.org/lunar/ - Web |
| Lunar phase simulator (animation) Lunar phase simulator (animation) astro.unl.edu/naap/lps/animations/lps.swf - Web |
| Starchild: Moonlight Madness Starchild: Moonlight Madness starchild.gsfc.nasa.gov/.../moonlight.html - Web |
| Names and Images of the 8 moon phases Names and Images of the 8 moon phases www.moonphases.info/moon_phases.html - Web |
| Quia 3rd Grade SOL 3.8 – Put the Moon's Phases in ... Quia 3rd Grade SOL 3.8 – Put the Moon's Phases in the Correct Order www.quia.com/rd/11412.html?AP_rand=521131365 - Web |
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| Astrophysics Science Project Integrating Research ... Astrophysics Science Project Integrating Research & Education: Lunar Phases sunshine.chpc.utah.edu/labs/moon/lunar_phases_main.html - Web |
