Simon R. Bandler is a research astrophysicist at NASA’s Goddard Space Flight Center. He received his BS degree in mathematical physics from the University of Sussex in the U.K. and his MS and PhD degrees in physics from Brown University in the U.S. in 1992 and 1996. He is the author of more than 200 journal papers. His current research interests include transition-edge sensor and magnetic x-ray microcalorimeters, and x-ray astrophysics. He is the project manager for the U.S. contribution to Athena X-ray Integral Field Unit instrument. He has participating in sub-orbital instrument programs and concepts for many proposed new flight programs.