I recently read (well, listened to) The Colours of Space by Marion Zimmer Bradley. You can read my proper review over at my book blog,  but here I wanted to discuss some of the science that popped up in the book.

The title of the novel — The Colours of Space — refers to the stars being much more brightly coloured when seen in space, as compared with when seen from inside the Earth's atmosphere. (There's another reference there to plot elements as well, which I won't spoil, but I read the...