Question

Why is the moon fully visible from the earth on some nights and not seen on other nights?

ᴇxᴘʟᴀɪɴ ᴡɪᴛʜ ᴛʜᴇ ʜᴇʟᴘ ᴏғ ᴅɪᴀɢʀᴀᴍs.​

Answer 1

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We know that the earth orbits the sun and the moon orbits the earth. We on earth see the near-side of the moon rather than the far side. While the moon orbits the earth, one side of the moon will always be lit up – but our position on earth and the position in orbit determine how much of that side we see.