SuperMassiveBlackHole

[konicaman]

Don´t know if this has been posted before - at least it did not turn up in a search.

http://www.supermassiveblackholemag.com/

Well, not exactly a book, but magazines to download for free - quite some interesting stuff here.

 

[rparmar]

I had a photo in one of their earlier issues. A very intriguing magazine, nonetheless!

 

[petronius]

Thank you for the link!