It is with deep regret and sadness that I announce the unexpected passing of Dr. John Sigwarth, a senior scientist in the Heliophysics Division here at Goddard Space Flight Center. John died Monday of an aortic aneurysm. He was 49. John joined Goddard in 2004 and was an incredibly respected and dedicated member of our community. He received his Ph.D. from The University of Iowa in December 1989 and was […]