Excellent answers, but I'd like to supplement them a little. <img src="/images/icons/wink.gif" /><br /><br /><b><font color="yellow">What will I see? Is it light, dark?</font><br />Yes. It is light and dark - contrary to the popular misconception, there is no "Dark Side" of the Moon. The Moon has day and night, just like here on Earth, the only difference is that its revolution and rotation period are the same, which means that the day is 14 Earth days long, as is its night. </b><br /><br />If it is daytime, you will see the Moon's surface. It is bright, with lots of glassy particles in the regolith to reflect sunlight. This will wash out any stars in the sky, because your eyes will adjust to the brightness of the lunar surface. But the sky will be black, because there is no air to diffuse it. If you're on the nearside (the side facing Earth), you'll see the Earth in the sky, about twice as wide as the Moon appears from here. The phase of the Earth will depend on the phase of the Moon; if Earth observers are seeing the full moon, you will see only a very thin crescent Earth -- or possibly no Earth at all. If you are lucky enough to be there during a lunar eclipse, you'll see the Earth eclipse the Sun! If it is a half-moon for observers on Earth, you will see a half Earth.<br /><br />If it is nighttime and you are on the Moon's farside, you will be on an absolutely pitch-black surface underneath a star-studded night sky that would make any astronomer drool with excitement. <img src="/images/icons/smile.gif" /> It will be better than the stars as seen from the top of a very high mountain at night. If you are on the nearside, however, it won't be quite so dark. The Earth will most likely be better than half full, which will cast a lot of light. (The Earth is not only bigger but also a lot more reflective than the Moon. You can see by moonlight, so you'd see even better by earthlight.) If Earth observers are seeing a new moon (i.e. not seeing the moon at <div class="Discussion_UserSignature"> <p> </p><p><font color="#666699"><em>"People assume that time is a strict progression of cause to effect, but actually from a non-linear, non-subjective viewpoint it's more like a big ball of wibbly wobbly . . . timey wimey . . . stuff."</em> -- The Tenth Doctor, "Blink"</font></p> </div>