Hairy Scale Model
We have optional homework for Astronomy class. I’m not even sure when it’s due. This teacher has been somewhat fuzzy on these issues; for example, the syllabus says that attendance is part of our grade, but he has yet to take roll. Anyway…
A “scale model” in this case is when you compare something that is too large to be comprehended to something that really relates the size. My favorite example from last night is one regarding the number of stars in the universe.