his was an image I did for the July 1999 edition of UK magazine Frontiers
, to illustrate a
solar sail. Solar sails are gigantic sheets of highly reflective but wafer-thin material. They
intercept photons – particles of light – from the Sun, and the pressure from this pushes the
craft through space. This picture depicts a circular-design sail flying past Halley's comet at the
next encounter in 2061.