Originally shared by +NASA The nitrogen in Pluto’s atmosphere (in the form of N2 gas) is actually flowing away and escaping the planet at an estimated rate of hundreds of tons per hour. So where does all of this nitrogen come from? A postdoctoral researcher working on our New Horizons mission presents some possibilities: http://go.nasa.gov/1L1m2JA #PlutoFlyby #NASABeyond