Which edition of H.A. Rey’s The Stars: A New Way to See Them?

I have been searching the internet trying to figure out the differences between the different editions. Can anyone familiar with this book advise: I’m looking for the most recent / up to date edition. Is it is the second edition, or the enlarged worldwide edition? Does “enlarged” mean large print and/or a larger book? Or does it mean more info has been added? Thanks in advance.