Science How do professional observatories deal with dew? Do they heat the mirrors and lenses like amateurs do?
Science In many articles in your magazine, you refer to regions of the sky as being measured in “square degrees.” How exactly is a square degree defined, and how many of them does the sky contain?
Cosmology Even with some understanding of infinite density, it seems impossible for the enormous mass of the universe to arise from a subatomic particle. How is this possible?
Science When using astronomy software or astronomy books and atlases, I notice that not everyone draws the constellations the same way. Why?
