Second from the Planetary Society.
Research technologies needed to significantly advance Department of Defense (DoD) capabilities to operate spacecraft in the harsh radiation environment of MEO (Medium-Earth Orbits).
"Measure electron cloud densities in Earth?s ionosphere, a layer high above Earth that affects long-range radio communications."
Launch surveillance of satellites or Elliptical.
"One of the payloads is NASA's DSAC (Deep Space Atomic Clock), a technology demonstration mission to validate a miniaturized, ultra-precise mercury-ion atomic clock that is 100 times more stable than today?s best navigation clocks."
