Mars, Jupiter, Saturn, Pluto

MARS JUPITER SATURN PLUTO Planets FOUR OF THE NINE PLANETS COMPRISING THE SOLAR SYSTEM ARE SHOWN ON THIS CARD. MARS. JUP I TER, AND SATURN WERE PHO TOGRAPHED WITH THE 100-1NCH HOOKER TELESCOPE: PLUTO WITH THE 200-INCH HALE TELESCOPE. DIST.IN MILLIONS OF PLUTO MARS 142 JUPITER 484 SATURN 887 MILES FROM THE SUN. 3,670 DI AMETER AT EQUATOR IN MILES. PERIOD OF REVOLUT ION AROUND THE SUN IN YRS.1.88 NUMBER OF SATELLITES 4, 200 88,800 75, 100 000' 11.86 29.46 247.7 9 UNKNOWN P C8 12 *THE DIAMETER OF PLUTO IS UNCERTAIN MOUNT WILSON AND PALOMAR OBSERVATORIES PHOTOGRAPH E4723