There is at least one question, which really bugs me: How hard is the Lunar surface?
Yes, this is science. Yes, it is planetary science. Yes, it is about space instruments, landings, engineering, data, modelling, understanding space objects and space exploration in the first place. I have a hard time to understand, that there could be a difference between science and exploration. For me, this is awkward and strange. Could someone explain to me, where there could possibly be a boundary?
Space.SE is defined as "Beta Q&A site for spacecraft operators, scientists, engineers, and enthusiasts". I am a scientist. If you guys think that there is a boundary by any definition, I would like to propose to officially broaden the scope and include planetary sciences at the very very least.
(Actually, such stuff would make excellent questions for a geoscience stack exchange. Since there is not any and since this stuff does not fit into astronomy or physics, this is also the only place where someone could ask such a question.)