Perhaps the layout of the main page is optimized about as well as reasonably can be expected, but I think we should tweak the choices of words in some places.

Case in point: There is a new thread in Questions and Answers with a biology question that has nothing to do with astronomy or space science. Perhaps the poster saw Questions and Answers in a group boldly labeled General, and did not notice the fine print indicating that it was intended for space/astronomy questions. I would suggest boldly entitling it Space/Astronomy Questions and Answers. In addition, my inclination would be to move General Science into this group.