Paul G. Abel is a British astronomer, mathematician, broadcaster and writer. Currently, he is based in the Centre for Interdisciplinary Science in the department of Physics & Astronomy at the University of Leicester where he teaches Mathematics. He is a presenter for the BBC's "The Sky at Night" program and has written for many popular astronomy magazines, focusing on how amateur astronomers can contribute to the field. Dr. Brian May, founding member of Queen, has a PhD in Astronomy and is the co-author of Bang! The Complete History of the Universe and The Cosmic Tourist Chris North is a professor at Cardiff University and received his doctorate from Oxford. He is part of BBC Televisions popular series "The Sky at Night," and works on two astronomical satellites: the European Space Agency's Herschel and Planck missions. He lives in Wales.