Pluto Explored. (left to right): New Horizons Principal Investigator Alan Stern of Southwest Research Institute (SwRI), Boulder, Colorado; New Horizons’ Deputy Project Scientist Leslie Young, SwRI; Johns Hopkins University Applied Physics Laboratory (APL) Director Ralph Semmel; Annette Tombaugh, daughter of Clyde Tombaugh, who discovered Pluto in 1930; and New Horizons Co-Investigator Will Grundy, Lowell Observatory, Flagstaff, Arizona hold a print of the 1991 Pluto stamp –with their suggested update – on July 14 at APL in Laurel, Maryland. (NASA/Bill Ingalls)
Home Pluto Explored. (left to right): New Horizons Principal Investigator Alan Stern of Southwest Research Institute (SwRI), Boulder, Colorado; New Horizons’ Deputy Project Scientist Leslie Young, SwRI; Johns Hopkins University Applied Physics Laboratory (APL) Director Ralph Semmel; Annette Tombaugh, daughter of Clyde Tombaugh, who discovered Pluto in 1930; and New Horizons Co-Investigator Will Grundy, Lowell Observatory, Flagstaff, Arizona hold a print of the 1991 Pluto stamp –with their suggested update – on July 14 at APL in Laurel, Maryland. (NASA/Bill Ingalls) Pluto Explored. (left to right): New Horizons Principal Investigator Alan Stern of Southwest Research Institute (SwRI), Boulder, Colorado; New Horizons’ Deputy Project Scientist Leslie Young, SwRI; Johns Hopkins University Applied Physics Laboratory (APL) Director Ralph Semmel; Annette Tombaugh, daughter of Clyde Tombaugh, who discovered Pluto in 1930; and New Horizons Co-Investigator Will Grundy, Lowell Observatory, Flagstaff, Arizona hold a print of the 1991 Pluto stamp –with their suggested update – on July 14 at APL in Laurel, Maryland. (NASA/Bill Ingalls)
Pluto Explored. (left to right): New Horizons Principal Investigator Alan Stern of Southwest Research Institute (SwRI), Boulder, Colorado; New Horizons’ Deputy Project Scientist Leslie Young, SwRI; Johns Hopkins University Applied Physics Laboratory (APL) Director Ralph Semmel; Annette Tombaugh, daughter of Clyde Tombaugh, who discovered Pluto in 1930; and New Horizons Co-Investigator Will Grundy, Lowell Observatory, Flagstaff, Arizona hold a print of the 1991 Pluto stamp –with their suggested update – on July 14 at APL in Laurel, Maryland. (NASA/Bill Ingalls)
