Accelerate progress in our three core enterprises — Explore Worlds, Find Life, and Defend Earth. You can support the entire fund, or designate a core enterprise of your choice.
Ron Greeley Dr. Ronald Greeley was involved in lunar and planetary studies for more than four decades. His latest research focused on understanding planetary surface processes and geological histories, utilizing a combination of spacecraft data analysis, laboratory experiments, and geological field studies on Earth of features analogous to those observed on the planets. He was a mentor and friend to so many planetary scientists. He died October 27, 2011, at the age of 72.