Worlds of a Distant Sun: 47 Ursae Majoris b . ... Credit Copyright: John Whatmough, Extrasolar Visions Explanation: Within the last few years, observational astronomy has given humanity evidence of the existence of worlds beyond the solar system. Indeed, solar-type stars are now inferred to harbor planets of approximately Jupiter mass - some residing in temperature zones which could conceivably support liquid water and therefore life ! ... NASA Web Site Statements, Warnings, and Disclaimers . ...