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Association of Bangalore Amateur Astronomers

Remembering names of Moon Phases

26 Sep 2017, 10:45 UTC
Remembering names of Moon Phases
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We are seeing moon getting brighter in the evening sky every day from the last new moon on 20th. With each passing day more area of the moon is illuminating and we can see lot of features on the moon. Many people have confusion when it comes to naming the phases of the moon, so here is a something useful to remember the names. First, we start with couple of days after the new moon, the phase we are seeing is crescent phase a thin sunlit part of the moon and since the sunlit part is getting bigger with passing days we call it waxing crescent. This is from old English meaning something that grows, here the brighter side is growing.Waxing crescent moon. Sunlit part towards west.Next is First quarter, this phase happens when the Sun, earth and the moon align in such a way that Sun and moon are at right angles as seen from earth. We can seen this in the evening sky, on the evening of the first quarter at sunset, we can measure the angle between Sun at the horizon and the moon and the angle will be 90 degrees or close to 90 degrees depending ...

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