HOW TO USE THIS PASSPORT Before you begin your journey, record your name and PASSPORT other vital facts on the first page of your passport. to the To find each planet station, use the map as your guide. After visiting each station, get your passport stamped SOLAR SYSTEM at a nearby location as proof of your visit to each planet. If you are unable to get your passport stamped at one or more locations, you can get it stamped at the Sciencenter. (Passports downloaded from www. sciencenter.org do not qualify for free admission.) For school group reservations and group passport purchases call the Sciencenter at 607.272.0600. AUDIO TOUR Learn more about the Solar System and the planets as you explore the Sagan Planet Walk! This free tour is narrated by Bill Nye the Science Guy. Listen to the tour by phone at: 703.637.6237 Download the tour as a podcast from iTunes or: www.sciencenter.org/saganpw PACE THE SPACE The Sagan Planet Walk is a model of our Solar System at one five-billionth (1/5,000,000,000) of the actual size. SAGAN PLANET WALK Starting with the Sun on the Commons in downtown Ithaca, this ¾ mile (1200 meter) walking tour leads to Sciencenter, Ithaca, NY the Sciencenter. Both the size of the planets and the distance between them are accurately scaled and displayed. Introduction 1 The Sciencenter of Ithaca, New York, U.S.A. hereby requests all whom it may concern to permit the citizen of the Solar System named herein to pass without delay or hindrance and in case of need to give all lawful aid and protection. NAME: ADDRESS: COUNTRY: YOUR EARTH AGE: TODAY’S EARTH DATE: PEOPLE TRAVELING WITH YOU: The text about the Solar System in this passport was written by Ann Druyan. Portions consist of excerpted passages from: PALE BLUE DOT: Copyright ©1994 by Carl Sagan; COSMOS: ©1980 by Carl Sagan Productions, Inc.; and COMET: ©1985 by Carl Sagan and Ann Druyan. Portions ©1997 by Ann Druyan and the Signature of Bearer Estate of Carl Sagan. All rights reserved. NOT VALID UNTIL SIGNED Identification Page Identification 2 SAGAN PLANET WALK PASSPORT to the SOLAR SYSTEM MAP PASSPORT STAMPING SCIENCENTER LOCATIONS PLUTO 7 Sun, Mercury, Venus, PLUTO Franklin St Jay St 13 Earth and Mars Dey St Willow Ave 1 M&T Bank The Commons Franklin St Customer Service Desk NEPTUNE NEPTUNE Lewis St Auburn St Auburn 2 15 Steps Gallery 171 The Commons Adams St 1st St 6 Asteroids 2nd St 3 Tompkins Trust 3rd St Tompkins St Company Drive Thru Inside at the Teller Line Lake Ave St Cayuga N 116 E Seneca St. Hancock St Jupiter and Saturn 4 The Cat’s Pajamas DeWitt Mall Yates St Madison St Saturn and Uranus Utica St Utica 5 Kinney Drugs 4th St 513 N. Cayuga St. Marshall St Monroe St Neptune 6 P&C Market N Plain St Plain N 212 Hancock St. Cascadilla St 5 URANUS URANUS Customer Service Desk Farm St Pluto 7 Sciencenter Esty St 601 First St. Cascadilla Ave St Tioga N If you are unable to get your passport stamped at one or more locations, you can get it stamped at the Sciencenter. AUDIO TOUR N Albany St Albany N Court St Learn more about the Solar System and N Green St Green N the planets as you explore the Sagan Planet Walk! This free tour is narrated by Bill Nye the Science Guy. SATURN SATURN Listen to the tour by phone at: Buffalo St 703.637.6237 Download the tour as a podcast from Seneca St iTunes or: JUPITER 4 www.sciencenter.org/saganpw JUPITER 3 ASTEROIDS St Albany S ASTEROIDS PACE THE SPACE MARS The Sagan Planet Walk is a model of S Geneva St Geneva S State St MARS 1 EARTH our Solar System at one five-billionth EARTH S Cayuga St Cayuga S (1/5,000,000,000) of the actual size. VENUS VENUS Starting with the Sun on the Commons in MERCURY SUN MERCURY downtown Ithaca, this ¾ mile (1200 meter) Green St walking tour leads to the Sciencenter. 2 State St Both the size of the planets and the THE COMMONS distance between them are accurately scaled and displayed. SUN 3 Traveler beware: Five-billion-year-old nuclear fusion reactor in operation! Think of the Sun’s heat on your upturned face on a cloudless summer day; think how dangerous it is to gaze at the Sun directly. From 150 million kilometers away, we recognize its power. What would we feel on its seething, self-luminous surface, or immersed in its heart of nuclear fire? And yet, our Sun is just an ordinary star, one of 400 billion in the Milky Way Galaxy, which is one of billions, perhaps hundreds of billions, of galaxies in the Universe. Someday, five or six billion years from now, when all the hydrogen fuel in its interior has been converted into helium, the Sun will begin to evolve into a Red Giant. Ruddy and bloated, it will envelop and devour the planets Mercury and Venus—and probably the Earth as well. The inner Solar System will then reside within the Sun. THE SUN’S DIAMETER IS LCOME TO T 109 TIMES BIGGER WE HE SU O THE SU N ME T N THAN EARTH’S DIAMETER CO Fun Facts EL R = 1,392,000km THE CENTER W THE SUN’S DIAMETER IS SUN DIAMETE O 109 TIMES BIGGER F THE CENTER O THAN EARTH’S DIAMETER UR TE M E M SOL AR SYS ST O R SY F OUR SOL A SUN DIAMETE R = 1,392,000k m MERCURY’S DIAMETER IS ME T ELCO O MER 2.6 TIMES SMALLER W CU ER RY E TO M CURY THAN EARTH’S DIAMETER OM SunC = 4,980km EL 4 R Sun 58 MILLION W MERCURY’S DIAMETER IS MERCURY DIAMETE K I 2.6 TIMES SMALLER LO 58 MILLION N M N U ETE S U S THAN EARTH’S DIAMETER RS FRO THE E M K I TH LO M ROM ETERS F MERCURY DIAMETE VENUS’ DIAMETER IS R = 4,980km COME TO 1.05 TIMES BIGGER WEL VEN U TO VENUS S OME THAN EARTH’S DIAMETER ELCHot days, cool nights = 12,360km R W DIAMETE 108 MILLION VENUS’ DIAMETER IS VENUS K Don’t pack light for a trip to the 5 I 1.05 TIMES BIGGER LO 108 MILLION N M N U THAN EARTH’S DIAMETER ETE S U Sun’s nearest S neighbor. RS FROM THE K HE IL T O M FROM WithETE RdaytimeS temperaturesVENUS usually peaking at nearlyEARTH’S DIAMETER IS DIAMETE R = 12,360km OME 400 degrees C and plummeting at night to a nippy 1503.7 TIMES BIGGER WELC TO EA RT TO EARTH H degreesOM CE below zero, we advise bringing both yourTHAN parka THE MOON’S DIAMETER ELC = 12,742k m andW your swimsuit when you travel to Mercury. While R 150 MILLION EARTH’S DIAMETER IS EARTH DIAMETE K the weather may be a bit extreme (a little like Ithaca), we I 3.7 TIMES BIGGER LO 150 MILLION N M N can guarantee that duringU your stay, time will seem to ETE S U THAN S THE MOON’S DIAMETER RS F THE K HE ROM IL T fly by:O M One yearFROM on Mercury is only 88 Earth days long. ETERS EARTH DIAMETE MARS’ DIAMETER IS R = 12,742k m Thought to be composed mostly of magnetic iron, 1.9 TIMES SMALLER ELCOME TO M W AR TO MARS S Mercury is notOME much larger than our Moon and is THAN EARTH’S DIAMETER ELC similarlyW scarred with impact craters from THEthe SUN’S cosmic DIAMETER IS R = 6,760km 228 MILLION MARS’ DIAMETER IS MARS DIAMETE collisions of eons. 109 TIMES BIGGER K OME TO TH TO THE SU 1.9 TIMES SMALLER IL ELC E S ME 228N MILLION N THAN EARTH’S DIAMETER O W UN O M N LC S U 1,392,000km ETE S U E THANE EARTH’S DIAMETER R = RS FR THE W K H THE SUN’S DIAMETER IS OM IL M T SUN DIAMETE O M ETERS FRO THE LARGEST THE CENTER MARS DIAMETE109 TIMES BIGGER THE CENTER R = 6,760km ASTEROID CERES IS ABOUT O M THAN EARTH’S DIAMETER OME TO TFHE A TE ELC O STE M YS THE ASTERO 4 TIMES SMALLER W UR SRO YSTEO R S TO ID OILDAR S F OUR SOL A ME S THAN EARTH’S MOON THERE ARE S O SUN DIAMETE R = 1,392,000k m MERCURY’S DIAMETER IS LC = 932km E THE LARGEST R MILLIONS W THERE ARE DIAMETE ASTEROIDFun Facts CERES IS ABOUT 2.6 TIMES SMALLERCERES OF ASTERIODSME TO M O MERCU I ELCO ERC ME T RY MILLIONS THAN EARTH’S DIAMETER N W UR O 4 TIMES SMALLER 4,980km OU Y LC OF ASTERIODS E M R = R SO TE M E ST LAR SYS W I THAN S EARTH’SY MERCURY’S MOON DIAMETER IS MERCURY DIAMETE N OUR SOLAR 58 MILLION 2.6 TIMES SMALLER JUPITER’S DIAMETER IS 58 MILLION N CERES DIAMETE K U R = 932km OMEI LTO S THAN EARTH’S DIAMETER 11.2 TIMES BIGGER ELC O M JUP N E JUP W ET ITE S UK I TH E TO ITER ERSR FROM THE LO M ROM OM THAN EARTH’S DIAMETER ETERS F ELC MERCURY DIAMETE VENUS’ DIAMETER IS W R = 4,980km R = 142,600k m 778 MILLION JUPITER’S DIAMETER IS 1.05 TIMES BIGGERJUPITER DIAMETE K VEN IL LCOME TO V ME TO US778 MILLION N THAN EARTH’S DIAMETER O WE ENU CO 11.2 TIMES BIGGERU M NMercury S EL S Mercury= 12,360km E U R TERS E S 6 W K THAN EARTH’S HDIAMETERE DIAMETE FROM TH IL M T VENUS O M ETERS FRO VENUS’ DIAMETER IS SATURN’S DIAMETER IS 108 MILLION JUPITER DIAMETE1.05 TIMES BIGGER 108 MILLION N R = 142,600k m K U 9.5 TIMES BIGGER COME ITLO S THAN EARTH’S DIAMETER WEL O MSAT N K HE TO SATUR ETUR S U IL T ME N THAN EARTH’S DIAMETER ERSN THE O M FROM CO FROM ETERS EL EARTH’S DIAMETER IS = 120,600km W VENUS DIAMETE R = 12,360km R 1,430 MILLION SATURN’S DIAMETER IS 3.7 TIMES BIGGERSATURN DIAMETE K O EART IL LCOME TO E ME T 9.51,430H TIMES MILLION BIGGER N THAN THE MOON’S DIAMETER O WE ART LCO U ME N H E S R = 12,742k m TER E SU W K THAN EARTH’S DIAMETERHE S FROM TH IL M T EARTH DIAMETE OMETERS FREARTH’SO DIAMETER IS 7 150 MILLION SATURN DIAMETE URANUS’ DIAMETER IS 150 MILLION N 3.7R = 120,600km TIMES BIGGER K S U 4 TIMES BIGGER COME TIOL U E THAN THE MOON’S DIAMETER EL O MRA N K H TO URANUS W ETNU S U ILO M T ME THAN EARTH’S DIAMETER ERS THE M ETERS FRO CO FROM EL MARS’ DIAMETER IS R = 47,000km W EARTH DIAMETE R = 12,742k m URANUS DIAMETE 2,870 MILLION URANUS’ DIAMETER IS 1.9 TIMES SMALLER K M I ME ME TO AR2,870S MILLION N THAN EARTH’S DIAMETER LO ELCO TO MA CO 4 TIMES BIGGER U M W N RS EL S = 6,760km ET U W THAN EARTH’S DIAMETER E R ERS HE S K I TH FROM T LO M ROM MARS DIAMETE ETERMARS’S F DIAMETER IS 228 MILLION URANUS DIAMETE NEPTUNE’S DIAMETER IS 228 MILLION 1.9NR