NASA's Living With a Star (LWS) program is a space-weather focused and applications driven research program. Its goal is to develop the scientific understanding necessary to effectively address those aspects of the connected sun–Earth system that directly affect life and society.  The program is implemented by a series of inter-related science missions, space environment testbeds, and a targeted theory, modeling, and data analysis program.  The Van Allen Probes are the second mission in the LWS program.  Credit: NASA
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