CHARLES A. FRANKEL: Worlds on Fire - Volcanoes on the Earth, the Moon, Mars, Venus and Io, ERIK WISCHNEWSKI: Astronomie in Theorie und Praxis, MICHAEL VAN PELT: Space Tourism - Adventures in Earth Orbit and Beyond, ROBERT BRUCE THOMPSON, BARBARA FRITCHMAN THOMPSON: Astronomy Hacks - Tips and Tools for Observing the Night Sky