I noted that it changes depending if I'm on the countryside ( it appears to be yellow )

  • $\begingroup$ I've seen the Moon always yellow. $\endgroup$ – user259412 Jun 12 '17 at 0:46
  • 1
    $\begingroup$ Honestly, have you done any research on this before asking here? $\endgroup$ – Alfred Centauri Jun 12 '17 at 0:57
  • $\begingroup$ In addition to @AlfredCentauri, literally the first google reveals the mystery. $\endgroup$ – Rumplestillskin Jun 12 '17 at 1:11
  • $\begingroup$ And sometimes it even appears orange or red, as the googling also reveals. $\endgroup$ – Conifold Jun 12 '17 at 2:28

It's the same as the reason the sky is blue and sunsets are red: air preferentially scatters blue light, letting more red light through. Whenever the moon is lower in the sky, its light has to travel through more air to reach you, which tints it yellow. You've probably noticed this effect in the countryside because there are less tall buildings, so you can see the moon when it's lower.


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