﻿ Why a half moon, is there any significance? - science mathematics
Why a half moon, is there any significance?

## Why a half moon, is there any significance?

[From: Astronomy & Space] [author: ] [Date: 02-26] [Hit: ]
Why a half moon, is there any significance?......

Why a half moon, is there any significance?

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say: You mean on the Turkish flag? I have no idea why.
Although the Muslims refused to accept help from the
Red cross, so they changed their name to the Red crescent, in those areas.
The crescent seems to be of significance to Muslims - don't know why.
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Adullah M say: To indicate its seventh day and 22th day of the Lunar month that would move on till the new moon ,the day that no man on earth could sight the moon in that night time.
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Clive say: None whatsoever.

The Moon has phases because it orbits the Earth every 29 1/2 days, and how much of it you can see depends on how much of what you can see is facing the Sun so it's lit up. If you can see a half moon, it means that the Moon is a quarter of the way round so if you trace out Sun - Earth - Moon, that's a right angle. Clearly then, half is in sunlight. It's just geometry and where all three are in relation to each other.

Watch night after night and you'll see the shape continually changing. At New Moon, the Moon is in the same direction as the Sun so you can't see it because only the far side is lit up. (And if it actually goes in front of the Sun, which it sometimes does, not every month because the orbits aren't exactly in line, there is a solar eclipse.) As the days go by, you start to see a crescent moon, and that gets bigger as the Moon moves round until after a week, a whole half is lit up - First Quarter. On it goes and more is lit up, we get to the gibbous phase, and after another week, it's Full Moon - you see a full circle. On it goes, the Moon gets gibbous the other way, then there's Last Quarter with the other half lit up, and back to a crescent and New Moon again.

WHEN you can see the Moon also changes. After New Moon, it rises soon after the Sun, so you can see it in the evening and maybe even in late daytime. If you're in the northern hemisphere, you have to look south to see the Moon so it's a D-shaped Moon. At Full Moon, the Sun goes down as the Moon comes up. Then as the Moon shrinks, it becomes C-shaped and it will be on view very late at night before sunrise. Which I sometimes see out of a south-facing window if I wake up very early.

If you're in the southern hemisphere, you have to look NORTH to see the Moon and the whole thing is reversed. First Quarter is C-shaped, Last Quarter is D-shaped, and what you see is upside-down compared with a normal Moon map.
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Bill-M say: No significance. Just another moon phase as it goes around the Earth.
But Look very close at the moon, you will notice that you can see all of it. 1/2 in daylight and 1/2 in shadow.
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drake say: When the moon is half lit, it has either completed one quarter of its rotation around earth or three quarters
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Ronald 7 say: It means that the Earth, Moon, Sun angle is at 90 Degrees
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tham153 say: That is the name of Henry Hudson's ship. There is NO lunar phase with that name
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poldi2 say: That depends on the context - a half moon is used for dozens of things, some profound and others mundane.
For some, its just a shape.
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Steven say: Something to do with the moods cycle after 28 days
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Sukrit say: It depends on spiritual world. Do good karma and donate to the moon. May the moon be safe and well.
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