![Cutaway model of the Earth’s Van Allen radiation belts with the two satellites from NASA’s Van Allen Probes, the first mission to fly the new Applied Physics Laboratory flight-software architecture.](https://appel.nasa.gov/wp-content/uploads/2013/08/541991main_rbelt-multi-670x380.jpg)
The Road to New Flight Software
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By Christopher Krupiarz In 2004, my group in the Space Department of the Johns Hopkins University Applied Physics Laboratory (JHU/APL) was presented with a critical opportunity and challenge.