[3] Green began working in the Magnetospheric Physics Branch at NASA's Marshall Space Flight Center in 1980.

At Marshall, Green developed and managed the Space Physics Analysis Network that provided scientists with access to data.

[4][5][6] In that role he served as a spokesman for NASA for planetary missions, for instance announcing the likelihood that there was once flowing water on Mars in September 2015.

[14] He served as an advisor on the Intrepid project, an initiative to construct and fly the world's first replica of a Civil War crewed balloon, and presented a talk for its official first lift-off at the Genesee Country Village & Museum celebration in Mumford, New York on July 4, 2012.

[16] This article incorporates public domain material from Dr. Jim Green, Director, Planetary Science Division, NASA Headquarters, Washington, DC.