EntityQ4977623· pop 6· linked from 8 articlesBruce HapkeSign in to saveAmerican planetary scientistConnectionsphysicsEntityInternational Standard Book NumberEntitydigital object identifierEntityApollo programConceptCornell UniversityEntityplanetary scienceEntityQ180686EntityJSTOREntitybibcodeEntityMariner 10EntityUniversity of Wisconsin–MadisonEntityUniversity of PittsburghEntityQ229883EntityViking programEntityemeritusEntityengineering physicsEntitylist of minor planets: 3001–4000EntityAmerican Astronomical SocietyEntityAmerican Geophysical UnionEntityhapkeiteEntityCategories1931 birthsAmerican geologistsAmerican planetary scientistsCornell University College of Engineering alumniFellows of the American Astronomical SocietyFellows of the American Geophysical UnionLiving peopleUniversity of Pittsburgh facultyUniversity of Wisconsin–Madison College of Letters and Science alumni