Michael S. Morris is a professor of physics at Butler University, Indianapolis, Indiana, United States. He earned a PhD in physics from the California Institute of Technology in Pasadena under the supervision of Kip Thorne. [1] Among his nine published peer-reviewed papers, his most notable theoretical contribution is his pioneering analysis of time travel through traversable wormholes, coauthored in 1987 with Kip Thorne, and Ulvi Yurtsever. Kip Thorne tells the story of this discovery in his 1995 book Black Holes and Time Warps: Einstein's Outrageous Legacy .