My latest book “Gibt es auf der dunklen Seite vom Mond Aliens?” available in April 2017. This is written for children, answering questions from children about space & the universe. My popular science book “Elefanten im All” describes the history and future of life and the universe. Updated in 2014, it is now available as a softback. It is also available in English under the title “Elephants in Space”, published by Springer. I am particularly proud of “Da Draussen – Leben auf unserem Planeten und anderswo” (2014), the story of life on Earth and what life out there amongst the stars could be like. It is available in German (with Kein @ Aber) and Dutch (with NieuwAmsterdam: “Hallo daar!”).