▁T usk eg ee ▁University , ▁obtain ing ▁a ▁B . S . ▁in ▁mechanical ▁engineering ▁and ▁a ▁master ' s ▁degree ▁in ▁nuclear ▁engineering . ▁He ▁then ▁worked ▁for ▁the ▁U . S . ▁Air ▁Force , ▁and ▁then ▁joined ▁NASA ' s ▁jet ▁prop ulsion ▁labor atory ▁in ▁ 1 9 7 9 . ▁ ▁Career ▁During ▁his ▁time ▁at ▁NASA , ▁from ▁ 1 9 7 9 ▁to ▁ 1 9 9 1 , ▁Johnson ▁worked ▁on ▁a ▁variety ▁of ▁projects , ▁including ▁the ▁Air ▁Force ▁miss ions ▁Lab , ▁developing ▁the ▁nuclear ▁power ▁source ▁for ▁the ▁Gal ile o ▁mission ▁to ▁Jup iter , ▁several ▁weapons ▁related ▁projects , ▁as ▁well ▁as ▁an ▁engineer ▁on ▁the ▁Mar iner ▁Mark ▁ll ▁Space craft ▁series ▁for ▁Com et ▁R ende z vous ▁and ▁Sat urn ▁Or b iter ▁Pro be ▁miss ions ." ▁Johnson ▁also ▁worked ▁on ▁the ▁ste alth ▁bom ber ▁program . ▁ ▁In ▁ 1 9 9 1 , ▁Johnson ▁founded ▁his ▁own ▁company , ▁Johnson ▁Research ▁and ▁Development ▁Co ., ▁Inc ., ▁of ▁which ▁he ▁is ▁also ▁the ▁president . ▁ ▁More ▁recently , ▁he ▁te amed ▁up ▁with ▁scient ists ▁from ▁Tul ane ▁University ▁and ▁T usk eg ee ▁University ▁to ▁develop ▁a ▁method ▁of ▁transform ing ▁heat ▁into ▁electric ity ▁with ▁the ▁goal ▁of ▁making ▁green ▁energy ▁more ▁afford able . ▁ ▁Johnson ▁currently ▁has ▁two ▁technology - development ▁companies : ▁Ex cell at ron ▁Sol id ▁State , ▁L LC ▁and ▁Johnson ▁Elect ro