Eli Botkin, 94, of Dedham, MA, a devoted husband, father, grandfather, great-grandfather, cousin and friend, passed away peacefully on Friday, October 30, 2020. He is survived by his loving wife Evelyn, his children Dianne, Brad (Renee), Naomi (Josh) and Josh (Deb), seven grandchildren, and four great -grandchildren. Born in New York City, Eli received undergraduate and graduate degrees from New York University (where he was captain of the riflery team) and the California Institute of Technology (Caltech). A lifelong student of math and physics, he enjoyed a nearly 60-year career as an aerospace engineer specializing in trajectory analysis – including as a member of the Grumman team that developed the Lunar Excursion Module (LEM), which was flown from lunar orbit to the moon’s surface during the Apollo program. In recent years, Eli served as a volunteer teacher at the Rashi School in Dedham, where he shared his love of math and science (particularly Einstein’s theory of special relativity) with middle school students. Due to Covid restrictions, the family held a private graveside service. Donations in Eli’s memory may be made to The New York Times Neediest Cases Fund or another charity of your choice.