Author of a ~Race into space - the Soviet space programmea (TM) (1988), a ~The new Russian space programmea (TM) (1994), a ~Russia in space - the failed frontier?a (TM) (2001), a ~Two roads into space - the Japanese and Indian space programmesa (TM) (1998), a ~The Chinese space programme - from conception to future capabilitiesa (TM) (1997), a ~The Chinese space programme - from conception to manned spaceflighta (TM) (2004), a ~Europea (TM)s space programmea (TM) (2003), a ~Two roads to the moona (TM) (with Dave Shayler)(forthcoming), a ~Russian planetary explorationa (TM) (forthcoming), a ~Latest in space 2007a (TM) (forthcoming), all Praxis titles. Writer on articles on spaceflight for Astronomy Now, Orbit, Spaceflight, Journal of the British Interplanetary Society (JBIS), Space Chronicle, Astronomy & Space, Sunday Press, Quest, Irish Independent. Broadcaster for RTE, BBC (Radio 4, World Service), Canadian Broadcasting.