AST561 Fall 2017: important Annoucements:

1 - There will be no class on Aug 21 due to the total solar eclipse - this is a huge astronomical event that happens extremely rarely in the continental USA. I hope some of you will be able to travel to southern Illinois to see it (fingers crossed for good weather).

2.  I notice that the Purdue textbook site has listed the first edition of the Schneider textbook. There's a 2nd edition that is far more up to date, which I'd like to use, unless some of you have already bought the 1st edition, in which case we'll use that one for the course. Please let me know if that is the case. (

Prof. Lister