Brian May greatest guitarist of all time. He was ranked at No. 26 on "Rolling Stone" magazine's list of the "100 Greatest Guitarists of All Time". In 2012, he was ranked the 2nd greatest guitarist in a "Guitar World" magazine readers poll. May was appointed a CBE by Queen Elizabeth II in 2005 for "services to the music industry and for charity work". May earned a PhD in astrophysics from Imperial College London in 2007, and was Chancellor of Liverpool John Moores University from 2008 to 2013. He was a "science team collaborator" with NASA's New Horizons Pluto mission. He is also
Brian May based on his observations at the Teide Observatory in Tenerife. In October 2006, May re-registered for his PhD at Imperial College and submitted his thesis in August 2007 (one year earlier than he estimated it would take to complete). As well as writing up the previous work he had done, May had to review the work on zodiacal dust undertaken during the intervening 33 years, which included the discovery of the zodiacal dust bands by NASA's IRAS satellite. After a viva voce, the revised thesis (titled "A Survey of Radial Velocities in the Zodiacal Dust Cloud") was approved in September