Hey there! I recently bought said book and would highly recommend it for any Astronomy and Cosmology undergrads. However, one little niggling thing about it (something that grinds my gears in general with textbooks) is that it features end of chapter questions yet no set of answers for the reader to check against their working's out after attempting them. I thought i'd write on here in hope that someone, anywhere knows of any material online for this such thing. From what I've seen, it appears to be a popular book, so surely someone has! I've tried many a Google search, but due to the ambiguity of the book's title, it literally seems like i'm trying to find a needle in a haystack. If anyone does know of any sites that would be insanely awesome!! Thanks in advance.