Oddbjørn EngvoldOddbjørn Engvold is Professor Emeritus at the Institute of Theoretical Astrophysics at the University of Oslo. He specializes in solar physics, and was Secretary General of the International Astronomical Union from 2003 to 2006, of which he is still n active member. He has authored and edited four books on solar physics and astronomy and has published more than 115 peer-reviewed articles and book chapters. Read More Read Less