36 comments

      1. That would be really cool! Might be a little tricky with the day/night time zone diff and the weather will be a factor but if we can co-ordinate things it sounds like a winner to me! ๐Ÿ™‚ What phase should we try for?

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    1. The sunlight hitting the moon’s surface is way more powerful than any reflected earthlight so any visible blue effect down here is due to the blue light scattering in the earth’s atmosphere of daytime sunlight – the same reason we see our sky as blue when there are no clouds.

      If the moon reflected blue light from earth we’d still see it at night time, moreso just after sunset and before sunrise! ๐Ÿ˜‰

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      1. I’m going to try to pay attention and see if the moon picks up the oranges and pinks at sunrise or sunup. If it picks up the blue from the sky (or scientifically, blue light from the earth’s atmosphere) and looks black and white at night with night sky being blackish mostly; then if it’s the atmosphere coloring our vision of the moon, would it not also be different at sunup and sundown? Arizona gets very red sunsets due to the dust particles (ok, pollution). For some reason I rarely see the moon then — I usually see it either pretty big late in the afternoon or at night.

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      2. I’ve seen a similar thing but more of a red-brown colour. I have a few pics of the Moon during a lunar eclipse when the red light is being bent through our atmosphere as it passes on to hit the moon behind the earth and it is quite reddish where the earth does not fully block the sunlight and casts its shadow on the moon. ๐Ÿ™‚

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      3. MNL: Careful observation is a key element of good science! ๐Ÿ™‚

        To get the reddening effect you’d have to have the moon and sun on almost opposite sides of the earth or very near to each other ( Full moon and new/very old moon respectively). At all other times the moon will take on the bluish hue ( moreso from the dark seas of the moon’s surface) as there will be more light we see from the direction of the moon in the ‘blue’ sky by reason of it being higher up in the sky than where it seems red closer to the horizon.

        Of course if you try to see a new or old moon at sunset and sunrise respectively it will only be a thin sliver and you may not see much of the darker ‘seas’ so the tinting might not be so noticeable.

        Actually come to think about it you should see the crescent to be redder the closer it is to the horizon as that is where there is the most atmosphere for the moonlight to pass through meaning more of the blue end of the white light spectrum is dispersed away from our line of eyesight. ๐Ÿ™‚

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