Mason OBE is a British theoretical physicist at the Department of Applied Mathematics and Theoretical Physics at the University of Cambridge. She holds a Personal Readership in Solar Physics. She has been involved in many solar space projects such as Skylab, Yohkoh and the Solar Maximum Mission. She has been working as a co-investigator of the Solar and Heliospheric Observatory project launched in 1995, and more recently on Hinode and the Solar Dynamics Observatory. She is a Fellow of St Edmund's College, Cambridge.