In order to help further these objectives, and to mark the 40th anniversary of human spaceflight, I organised a one-day symposium on The Scientific Case for Human Spaceflight as part of the 2001 UK National Astronomy Meeting. This has been followed by Royal Astronomical Society Specialist Discussion meetings on the Scientific Case for Human Space Exploration on 10 December 2004, Astronomy from the Moon on 14 December 2007, Astrobiology on the Moon on 14 May 2010, Lunar Science as a Window into the Early Evolution of the Solar System and Conditions on the Early Earth on 9 November 2012, Science Enabled by the Global Exploration Roadmap on 8 November 2013, and The Use of Extraterrestrial Resources to Help Facilitate Space Science and Exploration on 8 April 2016.
In 2003 I was a member of the Human Spaceflight Vision Group (HSVG), established by the European Space Agency (ESA) to advise on future human space projects. The HSVG reported in December 2003 and recommended that ESA participate in sending astronauts back to the Moon, for a range of scientific, cultural, political and economic reasons. I was primarily responsible for collating the scientific case, which has been published in full as ``The scientific case for renewed human activities on the Moon'', Space Policy, 20, 91-97, (2004). These ideas have been further developed in a White Paper submitted to the US Space Studies Board's Decadal Survey of the Planetary Sciences ``The Scientific Rationale for Renewed Human Exploration of the Moon'', (September, 2009).
In 2007 I was a member of the UK Space Exploration Working Group, which recommended increased UK involvement in space exploration within the developing Global Exploration Strategy. In 2008 I became a member of the European Space Sciences Committee (ESSC) of the European Science Foundation, and in 2014 I was appointed to the European Space Agency's Human Spaceflight and Exploration Science Advisory Committee (HESAC) which is ESA's senior advisory committee for all matters relating to human space exploration.
A more detailed statement of my views on the scientific and cultural case for human space exploration can be found on the Case for Space webpage that I maintain.