This is the coolest thing online I’ve seen in a long time. A team of amateur astronomers took over 1000 pictures of tiny areas of the Moon. 288 of them were chosen and mosaiced together. They describe the result far better than I do:
The end result is a high resolution 87.4 megapixel image of the Moon, larger even then previous images taken by some of the world’s largest observatories, allowing features as small as 1km to be clearly seen.
This is the world’s record for the largest mosaic of the Moon ever made, and it’s available for you to view in full detail (!) at their site, Lunar World Record 2009. Go to the image page, and you should see this:
What’s incredible is that you can zoom in.
And in, at ridiculously high resolution.
Do you see those things that look like dried up rivers emanating from that crater in the highest-resolution image on the lower left? That looks like a possible glacier path to me! Does anyone know what that feature is?