An Air Force Office of Scientific Research-funded scientist has made a discovery that might one day offer protection to military personnel exposed to radiation. Michael Daly, a professor of pathology at the Uniformed Services University of the Health Sciences in Bethesda, Md., has identified manganese complexes in the bacterium Deinococcus radioduran that protect protein, thereby resisting the damaging effects of radiation. “Death by DNA damage is the conventionally held view of why cells die after exposure to extreme dryness or radiation,” Daly said. “This work supports the idea that the mutual nature of extreme dryness and radiation resistance resides in the ability of cells to prevent protein damage.” He is now pursuing the practical applications of the manganese complexes in areas like radiation sickness protection. (AFOSR report by Maria Callier)
SDA Outlines Missile Tracking Satellite Plan
April 16, 2021
The Defense Department's Space Development Agency wants to blanket Earth with a constellation of low-cost, open-architecture data-relay and missile-tracking satellites whose sheer numbers, along with their 1,000-kilometer-high orbits, would theoretically thwart some modes of interference—but not all. With all going according to plan so far, SDA expects to launch five…