 Henbest also researched the optical spectra of quasars at the Royal Greenwich Observatory, before returning to the Department of Geology at Leicester University, to develop and install tiltmeters and a recording seismometer on the active volcano Mount Etna

He has also presented research on ancient astronomical observations to the European Association of Archaeologists 

Henbest is now an Honorary Professor in the Duncan of Jordanstone College of Art and Design, University of Dundee.With the publication of his first major book, "The Exploding Universe", in 1979 Henbest began a lifelong career as a science communicator - specialising in astronomy and space - across media platforms ranging from magazines and newspapers to radio, television and online.Henbest has written over 40 books, many written jointly with Heather Couper.