I'm a Swedish doctor of medicine, cancer specialist - medical oncology & radiation therapy, also with a past in radiation protection. I live in Stockholm, Sweden. I have also a past as a military physician & surgeon, chief medical officer on brigade level in the Royal Swedish Army for a long time. You can also find me as a cancer, history & military history expert on AllExperts.com and I'm a life time member of the National Space Society. In the past I have been active in the Mars Society, Moon Society, Artemis Society International, British Interplanetary Society, National Space Institute & L5 Society. I have been a space fan most of my life and I still am. I am now retired after a stroke.