The story:

a team of explorers have detected lifesigns on a bleak and 
desolate planetoid, bombarded by ultraviolet radiation.

They put down 2 members of the team to investigate, and at 
the edge of a plateau of sand-scoured granite, they find 
the ruins of an alien chapel, in which the blue-skinned 
priestess solemnly carries out her rites, honouring a rare 
natural source of clean springwater.

Her predecessor's skeletal remains lie interred in a crypt 
over to the right of the chapel, and the explorers watch as 
she walks over to honour her dead colleague...

(Caveats - I'm now back to LEGO as an adult, and at time of making this had only <400 bricks/parts, of any kind.

I used every last light-gray brick I had in this creation
- hence it's ruins, and not a full chapel. That may come with 
time, as I like the theme. I also only have one full kit for 
the space figures, which is why one has yellow hands, and 
you'll only see one set of tanks & visor! Oh, and my camera's 
just a compact jobby right now, not anything with a fantastic 
zoom or close-up capability... )