Betty Pierazzo, Senior Scientist at the Planetary Science Institute (PSI), died on Sunday, May 15, at her home in Tucson, Arizona. She was 47. Betty was an expert in the area of impact modeling throughout the solar system as well as an expert on the astrobiological and environmental effects of impacts on Earth and Mars. She had a passion for teaching and was a driving force in the development and expansion of PSI's education and public outreach program. Betty approached both life and work with enthusiasm and joy and was an inspiring colleague, teacher, mentor, and staunch friend.

Memorial sites have been posted at: http://www.psi.edu/memorial/betty.html and http://www.facebook.com/pages/Memorial-for-Betty-Pierazzo/220737251271988