▁a ▁result ▁of ▁the ▁un rest . ▁ ▁Summer ▁science ▁program ▁ ▁Ab ell ▁was ▁a ▁leader ▁and ▁teacher ▁in ▁the ▁Summer ▁Science ▁Program ▁for ▁tal ented ▁high ▁school ▁students . ▁ ▁At ▁Th atch er ▁School ▁in ▁O ja i , ▁California ▁he ▁and ▁others ▁taught ▁college - level ▁physics , ▁mathematics ▁and ▁astronom y ▁to ▁these ▁students . ▁ ▁A ▁number ▁of ▁them ▁went ▁on ▁to ▁purs ue ▁distinguished ▁care ers ▁in ▁science . ▁ ▁One ▁such ▁is ▁Ed ▁Kru pp ▁the ▁long - time ▁director ▁of ▁Griff ith ▁Observ atory ▁in ▁Los ▁Angeles . ▁ ▁Other ▁teaching ▁methods ▁Ab ell ▁also ▁lect ured ▁at ▁other ▁ven ues , ▁specifically ▁at ▁many ▁small ▁colleg es ▁that ▁lack ed ▁astronom y ▁depart ments . ▁ ▁He ▁also ▁stro ve ▁to ▁bring ▁the ▁stories ▁of ▁science ▁and ▁astronom y ▁to ▁the ▁people ▁through ▁public ▁lect ures . ▁ ▁He ▁wrote ▁several ▁books ▁including ▁Ex pl oration ▁of ▁the ▁Un iverse ▁a ▁text book ▁widely ▁used ▁in ▁under grad uate ▁astronom y ▁courses . ▁ ▁He ▁helped ▁produce ▁educational ▁TV ▁programs / series ▁such ▁as ▁Project ▁Un iverse ▁and ▁Under standing ▁Space ▁and ▁Time . ▁ ▁He ▁also ▁appeared ▁in ▁some ▁of ▁these ▁as ▁himself , ▁an ▁astronom er . ▁ ▁Project ▁Un iverse ▁was ▁a ▁ 3 0 ▁part ▁intro duct ory ▁course ▁on ▁astronom y ▁that ▁featured ▁Ed ▁Kru pp ▁director ▁of ▁Griff ith ▁Observ atory ▁in ▁Los ▁Angeles . ▁ ▁Ab ell ▁and ▁Julian ▁Schw inger ▁created ▁Under standing ▁Space ▁and