Colin Stuart is an astronomy author and speaker who has talked to over a third of a million people about the universe. His books have sold more than 100,000 copies and he's written 150+ popular science articles for The Guardian, Observer, New Scientist and the European Space Agency amongst many others. In 2014 he was runner-up in the European Astronomy Journalism Prize.
In recognition of his work to popularise astronomy, the asteroid (15347) Colinstuart is named after him. Also a fellow of the Royal Astronomical Society, he's talked about the wonders of the universe on Sky News, BBC News and Radio 5Live, climbed the biggest radio telescope in the UK, seen the death mask of Sir Isaac Newton and abseiled his old school's science block for charity.
Signed books @ www.colinstuart.net