Matt repliedIt is the reflection of the sun

Invading Bubbles Since 1892. repliedthe cheese is going off.

SpaceRikk repliedsunlight does that, it is grey but when the sun is on it it appears white.

Geoff G repliedActually the Moon is more a dark grey, similar to asphalt. You're also wrong about the Sun, which is basically white, not orange/yellowish. When you observe the Sun high in the sky with a neutral filter, it is white. It only appears yellow or orange when it is close to the horizon, because of pollutants in the Earth's atmosphere.

misty repliedit is made of milk. and sometimes it gets rotten, so it turns yellow.

She's an UNDERDOG repliedidk, just isss

Although it should be yellow, b/c it's supposedly made of cheese?

:)

jrcg repliedThe moon's surface is a very dark grey - if you had a handful of regolith infront of you it would look like dark gritty ash.

(I've some JSC-1 regolith simulant - and its albedo is about 0.05)

The only reason that the moon looks white is that you see it (generally) against a dark background, space. Raw unfiltered sunlight is essentially without colour (white) and the Earth's atmosphere introduces a bit of a yellowsh tinge - by scattering away the blue light.

When seen against a dark background that slight tint is imperceptible.

lindajune repliedSunlight in space is actually white - it looks yellow to our eyes on Earth because some of the blue wavelengths of sunlight are scattered by the atmosphere (that is what gives us our blue skies).
The moon rocks are greyish in colour (similar to rocks on Earth).
The flat maria are darker because they are basalt (like cooled lava on Earth). Because that grey reflects white light, and the moon is the only bright object at night, it appears white to our eyes.

Brant repliedAll objects tend to look more white the brighter they are, even with colors like red and blue. Even though the moon's surface is about as dark as old asphalt, the large degree of light reflecting off of it looks more white. That would be in areas like the maria, which are somewhat darker than the highlands, but there aren't many areas on the moon which are actually as bright as they appear from here.

Barry S repliedthe reason is because even thought the sun is yellowish it reflects the colour of what it bounces off and moon rocks are white. example... when you shin your car lights on a stop sign it doesn't bounce back the colour of the light it bounces back the colour of the sign.