This is a reference to Colin McInnes' Solar Sailing<bibref>McInnes:1999</bibref>.
"By using solar sailing – rotating the spacecraft and tilting its solar panels to use the very small pressure from sunlight to alter the spacecraft’s trajectory – MESSENGER navigators have achieved a new record for the smallest miss distance between the intended and actual closest approach distance during a flyby of a planet other than Earth."
--Ben 8 October 2008
--Ben 6 October 2008
--Ben 1 October 2008
--Ben 5 September 2008