Peter J. Salerno, a senior electrical systems engineer for NASA's Goddard Space Flight Center in Greenbelt, Md., for 30 years, died Jan. 6 at Holy Cross Hospital in Silver Spring, Md. He was 53. He had a heart attack and complications from diabetes, his mother-in-law, Dorothy Boerner, said.
Dr. Richard Battin, formerly of the Charles Stark Draper Laboratory and the MIT Department of Aeronautics & Astronautics, passed away on Saturday, February 8. Dr. Battin played a key role in the development of guidance and navigation theory used in the Apollo Program. His books Astronautical Guidance and An Introduction to the Mathematics and Methods of Astrodynamics have been important references for several generations of engineers in the space program.