John N. Bahcall, American astrophysicist and astronomer, co-developed the Hubble Space Telescope (d. 2005)
John Norris Bahcall (December 30, 1934 – August 17, 2005) was an American astrophysicist, best known for his contributions to the solar neutrino problem, the development of the Hubble Space Telescope and for his leadership and development of the Institute for Advanced Study in Princeton.