To Da Moon!

It seems to me that the "One small step for man" would be a bit smaller here, considering this is LEGO. Dorian Glacet built this awesome Apollo lunar lander and moon rover. The lander uses some clever techniques and looks very accurate (to my untrained eye, at least). But my favorite part of the build is the set of tracks left behind the rover. It looks very cool and really evokes some of those pictures the astronauts took on the moon.

EDIT: This model by Dorian is actually a reworking and representation of a lunar lander built by Saabfan. So, since credit needs to go where it is due, I wanted to mention both builders here. This is a good example of how work from two equally skilled builders can be combined to great effect.

Houston, We Have A Problem...

I really dig this simple little vignette by paddybricksplitter. it's clean, funny and well photographed. It also tells a story, which I think is the real secret formula of small scale dioramas. It's not about how much detail you can pack in, it's how you can evoke emotion or suggest a narrative.

Magnificent Desolation

My first childhood memory is sitting on my dad's lap watching a NASA mission unfold on TV. I've always had a fondness of the brave men and women of space exploration, and I'm also fond of this picture by tiler. The MOC isn't particularly fancy or spectacular, but it's clean, well designed and evocative of the lunar rover. But this is all about the excellent photo. The composition, lighting and editing are great, but the subtle touches like the registration marks and the reflection of the astronaut in the helmet truly make it.

Helium-3 Harvester

This crazy cool concept from Robiwan Kenobi  is for harvesting helium-3 from the surface of the moon. There's so much clever building and parts use that you can stare at this thing for ages. Then you can wrap your head around the fact that this is based on feasible science. Way cool.