David W. Hughes is Professor of Astronomy at the University of Sheffield and a VP of the Royal
Astronomical Society. Hughes was a co-investigator on the European Space Agency's Giotto
mission to Halley's comet. He has written widely on the history of astronomy and has served on
many space advisory committees.
Carole Stott was formerly a professional astronomer--she was Curator of Astronomy at the
Royal Observatory, Greenwich, UK--and is now a full-time writer on space. Carole has written
more than 20 books and contributed to many encyclopedias and journals.