Have you ever wondered what causes the moon phases? We all know that its appearance changes over time. But why? The good way to understand the phases of the moon is to examine an earth-moon-sun diagram:
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The fact that we cannot see the other side of the moon from the earth is due to a simple fact. The moon is a satellite of the earth, a small body that revolves about it, just as the earth moves in an orbit about the sun.
This journey of the moon around the earth takes a certain definite period, about 29 days. The moon also rotates on its axis, but the time it takes for the moon to rotate is the same length of time it takes for it to go around the earth. So we see only one side of the moon.
If you want lo get a picture of how this works, try this: hold your left hand in front of you and clench your fist. Imagine that is the earth. Now take an apple or orange and mark around it with a pencil to indicate two halves. Imagine that is the moon.
Now face one side of the "moon" towards the "earth". Keeping that same side facing the earth, make a complete circle around the earth. You will see that not only did the moon go around the earth, but it also made a complete rotation on its axis. And yet only one side ever faced the earth!
i hope you to like it...
have a nice time:)
Moon Phases / Lunar Phases Explained
An explanation of the moon phases using a colorful diagram with realistic images.
Replies
Thanks for these information.I really enjoyed them.Have a great day.
Kamel
i really love to know about what is happening in the sky...the sky at night is so mysterious and nice...
thanks a lot for your useful info...i learned a lot...
here is the link which others can visit for more info :
http://www.moonconnection.com/moon_phases.phtml
also you can visit the link below :
http://home.hiwaay.net/~krcool/Astro/moon/moonphase/
i wanna add another info about the moon:
we always see only one side of the moon!
WHY?!
i found the answer to this why at http://www.blurtit.com/q765735.html:
The fact that we cannot see the other side of the moon from the earth is due to a simple fact. The moon is a satellite of the earth, a small body that revolves about it, just as the earth moves in an orbit about the sun.
This journey of the moon around the earth takes a certain definite period, about 29 days. The moon also rotates on its axis, but the time it takes for the moon to rotate is the same length of time it takes for it to go around the earth. So we see only one side of the moon.
If you want lo get a picture of how this works, try this: hold your left hand in front of you and clench your fist. Imagine that is the earth. Now take an apple or orange and mark around it with a pencil to indicate two halves. Imagine that is the moon.
Now face one side of the "moon" towards the "earth". Keeping that same side facing the earth, make a complete circle around the earth. You will see that not only did the moon go around the earth, but it also made a complete rotation on its axis. And yet only one side ever faced the earth!
i hope you to like it...
have a nice time:)