Just a week after the awful news that we've lost <a href="http://www.uproxx.com/gammasquad/2012/03/25-beautiful-paintings-from-ralph-mcquarrie">Ralph McQuarrie</a>, we're sad to report <a href="http://en.wikipedia.org/wiki/Jean_Giraud" target="_blank">Jean Giraud</a>, AKA Moebius, has <a href="http://www.bbc.co.uk/news/17327374" target="_blank">passed away</a> at the age of 73 after a long battle with cancer.