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|00000000| 17 00 00 00 a0 05 00 00 | a0 05 00 00 a0 05 00 00 |........|........|
|00000010| a0 05 00 00 c5 41 00 00 | 82 2e 00 00 00 00 ae 01 |.....A..|........|
|00000020| 01 00 0e 00 00 00 00 00 | 00 00 00 00 7a 05 00 00 |........|....z...|
|00000030| 43 68 61 72 6f 6e 0a 0a | 43 68 61 72 6f 6e 20 61 |Charon..|Charon a|
|00000040| 6e 64 20 50 6c 75 74 6f | 20 66 6f 72 6d 20 61 20 |nd Pluto| form a |
|00000050| 64 6f 75 62 6c 65 20 70 | 6c 61 6e 65 74 20 73 79 |double p|lanet sy|
|00000060| 73 74 65 6d 2e 20 54 68 | 65 20 74 77 6f 20 6f 62 |stem. Th|e two ob|
|00000070| 6a 65 63 74 73 20 72 65 | 76 6f 6c 76 65 20 61 72 |jects re|volve ar|
|00000080| 6f 75 6e 64 20 61 20 63 | 6f 6d 6d 6f 6e 20 63 65 |ound a c|ommon ce|
|00000090| 6e 74 65 72 20 6f 66 20 | 67 72 61 76 69 74 79 2c |nter of |gravity,|
|000000a0| 20 77 68 69 63 68 20 69 | 73 20 6c 6f 63 61 74 65 | which i|s locate|
|000000b0| 64 20 62 65 74 77 65 65 | 6e 20 74 68 65 20 74 77 |d betwee|n the tw|
|000000c0| 6f 20 62 6f 64 69 65 73 | 2e 0a 0a 54 68 65 20 66 |o bodies|...The f|
|000000d0| 61 63 74 20 74 68 61 74 | 20 74 68 65 20 74 77 6f |act that| the two|
|000000e0| 20 6f 62 6a 65 63 74 73 | 20 69 6e 66 6c 75 65 6e | objects| influen|
|000000f0| 63 65 20 65 61 63 68 20 | 6f 74 68 65 72 20 74 6f |ce each |other to|
|00000100| 20 73 75 63 68 20 61 6e | 20 65 78 74 65 6e 74 20 | such an| extent |
|00000110| 69 73 20 64 75 65 20 74 | 6f 20 74 68 65 20 72 65 |is due t|o the re|
|00000120| 6c 61 74 69 76 65 6c 79 | 20 73 68 6f 72 74 20 64 |latively| short d|
|00000130| 69 73 74 61 6e 63 65 20 | 62 65 74 77 65 65 6e 20 |istance |between |
|00000140| 74 68 65 6d 20 6f 66 20 | 6c 65 73 73 20 74 68 61 |them of |less tha|
|00000150| 6e 20 32 30 2c 30 30 30 | 20 6b 69 6c 6f 6d 65 74 |n 20,000| kilomet|
|00000160| 65 72 73 20 28 31 32 2c | 34 32 30 20 6d 69 6c 65 |ers (12,|420 mile|
|00000170| 73 29 2e 0a 0a 41 6e 6f | 74 68 65 72 20 63 6f 6e |s)...Ano|ther con|
|00000180| 74 72 69 62 75 74 69 6e | 67 20 66 61 63 74 6f 72 |tributin|g factor|
|00000190| 20 69 73 20 74 68 65 20 | 73 69 7a 65 20 6f 66 20 | is the |size of |
|000001a0| 43 68 61 72 6f 6e 2c 20 | 77 68 69 63 68 20 69 73 |Charon, |which is|
|000001b0| 20 74 68 65 20 6c 61 72 | 67 65 73 74 20 73 61 74 | the lar|gest sat|
|000001c0| 65 6c 6c 69 74 65 20 69 | 6e 20 72 65 6c 61 74 69 |ellite i|n relati|
|000001d0| 6f 6e 20 74 6f 20 69 74 | 73 20 70 6c 61 6e 65 74 |on to it|s planet|
|000001e0| 20 69 6e 20 74 68 65 20 | 53 6f 6c 61 72 20 53 79 | in the |Solar Sy|
|000001f0| 73 74 65 6d 2e 0a 0a 49 | 74 20 68 61 73 20 61 20 |stem...I|t has a |
|00000200| 64 69 61 6d 65 74 65 72 | 20 6f 66 20 31 32 30 30 |diameter| of 1200|
|00000210| 20 6b 69 6c 6f 6d 65 74 | 65 72 73 20 28 37 34 35 | kilomet|ers (745|
|00000220| 20 6d 69 6c 65 73 29 2c | 20 77 68 69 63 68 20 69 | miles),| which i|
|00000230| 73 20 68 61 6c 66 20 74 | 68 65 20 73 69 7a 65 20 |s half t|he size |
|00000240| 6f 66 20 50 6c 75 74 6f | 20 28 72 61 74 69 6f 20 |of Pluto| (ratio |
|00000250| 31 3a 32 29 2e 20 54 68 | 65 20 73 69 7a 65 20 72 |1:2). Th|e size r|
|00000260| 61 74 69 6f 20 6d 6f 6f | 6e 20 3a 20 65 61 72 74 |atio moo|n : eart|
|00000270| 68 20 69 73 20 66 6f 72 | 20 65 78 61 6d 70 6c 65 |h is for| example|
|00000280| 20 31 3a 34 2e 20 44 75 | 72 69 6e 67 20 61 20 70 | 1:4. Du|ring a p|
|00000290| 65 72 69 6f 64 20 6f 66 | 20 36 2e 34 20 64 61 79 |eriod of| 6.4 day|
|000002a0| 73 2c 20 50 6c 75 74 6f | 20 63 6f 6d 70 6c 65 74 |s, Pluto| complet|
|000002b0| 65 73 20 61 20 66 75 6c | 6c 20 72 6f 74 61 74 69 |es a ful|l rotati|
|000002c0| 6f 6e 20 6f 6e 20 69 74 | 73 20 6f 77 6e 20 61 78 |on on it|s own ax|
|000002d0| 69 73 20 77 68 69 6c 65 | 20 43 68 61 72 6f 6e 20 |is while| Charon |
|000002e0| 72 65 76 6f 6c 76 65 73 | 20 6f 6e 63 65 20 61 72 |revolves| once ar|
|000002f0| 6f 75 6e 64 20 69 74 73 | 20 62 69 67 67 65 72 20 |ound its| bigger |
|00000300| 70 61 72 74 6e 65 72 20 | 70 6c 61 6e 65 74 2e 20 |partner |planet. |
|00000310| 43 68 61 72 6f 6e 20 74 | 68 65 72 65 66 6f 72 65 |Charon t|herefore|
|00000320| 20 61 6c 77 61 79 73 20 | 66 61 63 65 73 20 74 68 | always |faces th|
|00000330| 65 20 73 61 6d 65 20 70 | 61 72 74 20 6f 66 20 50 |e same p|art of P|
|00000340| 6c 75 74 6f 20 61 6e 64 | 20 74 68 65 20 6f 74 68 |luto and| the oth|
|00000350| 65 72 20 73 69 64 65 20 | 6f 66 20 43 68 61 72 6f |er side |of Charo|
|00000360| 6e 20 69 73 20 6e 65 76 | 65 72 20 76 69 73 69 62 |n is nev|er visib|
|00000370| 6c 65 20 66 72 6f 6d 20 | 50 6c 75 74 6f 2e 0a 0a |le from |Pluto...|
|00000380| 54 68 65 20 73 75 72 66 | 61 63 65 20 6f 66 20 43 |The surf|ace of C|
|00000390| 68 61 72 6f 6e 2c 20 77 | 68 69 63 68 20 68 61 73 |haron, w|hich has|
|000003a0| 20 61 20 64 61 72 6b 20 | 61 70 70 65 61 72 61 6e | a dark |appearan|
|000003b0| 63 65 20 69 73 20 62 65 | 6c 69 65 76 65 64 20 74 |ce is be|lieved t|
|000003c0| 6f 20 62 65 20 6d 6f 72 | 65 20 73 74 72 75 63 74 |o be mor|e struct|
|000003d0| 75 72 65 64 20 74 68 61 | 6e 20 74 68 61 74 20 6f |ured tha|n that o|
|000003e0| 66 20 50 6c 75 74 6f 2e | 20 49 74 20 63 6f 6e 73 |f Pluto.| It cons|
|000003f0| 69 73 74 73 20 6d 61 69 | 6e 6c 79 20 6f 66 20 68 |ists mai|nly of h|
|00000400| 65 61 76 69 6c 79 20 70 | 61 63 6b 65 64 20 69 63 |eavily p|acked ic|
|00000410| 65 2e 20 46 72 6f 7a 65 | 6e 20 6d 65 74 68 61 6e |e. Froze|n methan|
|00000420| 65 20 74 68 61 74 20 69 | 73 20 66 6f 75 6e 64 20 |e that i|s found |
|00000430| 6f 6e 20 50 6c 75 74 6f | 20 73 65 65 6d 73 20 6e |on Pluto| seems n|
|00000440| 6f 74 20 74 6f 20 61 70 | 70 65 61 72 20 6f 6e 20 |ot to ap|pear on |
|00000450| 43 68 61 72 6f 6e 2c 20 | 64 75 65 20 74 6f 20 69 |Charon, |due to i|
|00000460| 74 73 20 73 6d 61 6c 6c | 65 72 20 6d 61 73 73 2e |ts small|er mass.|
|00000470| 0a 0a 4d 6f 73 74 20 6f | 66 20 74 68 65 20 6b 6e |..Most o|f the kn|
|00000480| 6f 77 6c 65 64 67 65 20 | 6f 6e 20 50 6c 75 74 6f |owledge |on Pluto|
|00000490| 20 61 6e 64 20 43 68 61 | 72 6f 6e 20 77 61 73 20 | and Cha|ron was |
|000004a0| 67 61 74 68 65 72 65 64 | 20 62 79 20 6f 62 73 65 |gathered| by obse|
|000004b0| 72 76 61 74 69 6f 6e 20 | 74 68 72 6f 75 67 68 20 |rvation |through |
|000004c0| 74 68 65 20 48 75 62 62 | 6c 65 20 53 70 61 63 65 |the Hubb|le Space|
|000004d0| 20 54 65 6c 65 73 63 6f | 70 65 2e 20 50 6c 75 74 | Telesco|pe. Plut|
|000004e0| 6f 20 69 73 20 74 68 65 | 20 6f 6e 6c 79 20 70 6c |o is the| only pl|
|000004f0| 61 6e 65 74 20 69 6e 20 | 74 68 65 20 53 6f 6c 61 |anet in |the Sola|
|00000500| 72 20 53 79 73 74 65 6d | 20 74 68 61 74 20 68 61 |r System| that ha|
|00000510| 73 20 6e 6f 74 20 79 65 | 74 20 62 65 65 6e 20 76 |s not ye|t been v|
|00000520| 69 73 69 74 65 64 20 62 | 79 20 61 20 73 70 61 63 |isited b|y a spac|
|00000530| 65 63 72 61 66 74 20 66 | 72 6f 6d 20 74 68 65 20 |ecraft f|rom the |
|00000540| 65 61 72 74 68 2e 20 54 | 68 65 20 66 69 72 73 74 |earth. T|he first|
|00000550| 20 73 70 61 63 65 63 72 | 61 66 74 20 74 6f 20 65 | spacecr|aft to e|
|00000560| 78 70 6c 6f 72 65 20 74 | 68 65 20 64 6f 75 62 6c |xplore t|he doubl|
|00000570| 65 20 70 6c 61 6e 65 74 | 20 73 79 73 74 65 6d 20 |e planet| system |
|00000580| 77 69 6c 6c 20 70 61 73 | 73 20 6e 65 61 72 20 50 |will pas|s near P|
|00000590| 6c 75 74 6f 20 61 6e 64 | 20 43 68 61 72 6f 6e 20 |luto and| Charon |
|000005a0| 69 6e 20 32 30 31 30 2e | 0a 0a 00 da 02 00 00 0e |in 2010.|........|
|000005b0| 00 02 00 0f 00 01 00 00 | 00 00 00 00 00 00 00 03 |........|........|
|000005c0| 00 01 00 01 00 06 00 00 | 00 00 00 00 40 00 00 00 |........|....@...|
|000005d0| 00 00 00 00 50 02 00 07 | 00 0d 00 00 00 00 00 00 |....P...|........|
|000005e0| 40 00 00 00 00 00 00 00 | 50 02 00 14 00 05 00 00 |@.......|P.......|
|000005f0| 00 ff 00 00 00 01 00 00 | 00 00 00 00 50 02 00 19 |........|....P...|
|00000600| 00 01 00 00 00 ff 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000610| 50 02 00 1a 00 9f 01 00 | 00 00 00 00 00 00 00 00 |P.......|........|
|00000620| 00 00 00 00 50 02 00 b9 | 01 0c 00 00 00 ff 00 00 |....P...|........|
|00000630| 00 02 00 00 00 00 00 00 | 50 02 00 c5 01 71 00 00 |........|P....q..|
|00000640| 00 00 00 00 00 00 00 00 | 00 00 00 00 50 02 00 36 |........|....P..6|
|00000650| 02 04 00 00 00 ff 00 00 | 00 03 00 00 00 00 00 00 |........|........|
|00000660| 50 02 00 3a 02 03 00 00 | 00 00 00 00 00 00 00 00 |P..:....|........|
|00000670| 00 00 00 00 50 02 00 3d | 02 05 00 00 00 ff 00 00 |....P..=|........|
|00000680| 00 04 00 00 00 00 00 00 | 50 02 00 42 02 cf 02 00 |........|P..B....|
|00000690| 00 00 00 00 00 00 00 00 | 00 00 00 00 50 02 00 11 |........|....P...|
|000006a0| 05 05 00 00 00 ff 00 00 | 00 05 00 00 00 00 00 00 |........|........|
|000006b0| 50 02 00 16 05 02 00 00 | 00 ff 00 00 00 00 00 00 |P.......|........|
|000006c0| 00 00 00 00 50 02 00 18 | 05 63 00 00 00 00 00 00 |....P...|.c......|
|000006d0| 00 00 00 00 00 00 00 00 | 50 10 ff 00 00 00 00 00 |........|P.......|
|000006e0| 00 bc 02 00 00 00 00 00 | 00 02 22 41 72 69 61 6c |........|.."Arial|
|000006f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000700| 00 00 00 00 00 00 00 00 | 00 00 00 38 ff 00 00 00 |........|...8....|
|00000710| 00 00 00 90 01 00 00 00 | 00 00 00 02 22 41 72 69 |........|...."Ari|
|00000720| 61 6c 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |al......|........|
|00000730| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 01 00 01 |........|........|
|00000740| 00 07 00 01 00 08 00 08 | 00 01 00 09 00 9a 00 01 |........|........|
|00000750| 00 9b 00 9b 00 01 00 9c | 00 44 01 01 00 45 01 45 |........|.D...E.E|
|00000760| 01 01 00 46 01 c6 01 01 | 00 c7 01 c7 01 01 00 c8 |...F....|........|
|00000770| 01 4f 03 01 00 50 03 50 | 03 01 00 51 03 41 04 01 |.O...P.P|...Q.A..|
|00000780| 00 42 04 42 04 01 00 43 | 04 79 05 01 00 7a 05 7a |.B.B...C|.y...z.z|
|00000790| 05 01 00 7b 05 7b 05 00 | 00 00 00 00 00 00 00 00 |...{.{..|........|
|000007a0| 00 00 00 f0 80 a0 00 00 | 00 00 00 01 6e 04 01 dc |........|....n...|
|000007b0| 08 01 4a 0d 01 b8 11 01 | 26 16 01 94 1a 01 02 1f |..J.....|&.......|
|000007c0| 01 70 23 01 de 27 01 4c | 2c 01 ba 30 01 28 35 01 |.p#..'.L|,..0.(5.|
|000007d0| 96 39 01 04 3e 00 00 00 | 00 00 00 00 00 00 00 00 |.9..>...|........|
|000007e0| 00 00 00 00 00 41 00 72 | 00 69 00 61 00 6c 00 00 |.....A.r|.i.a.l..|
|000007f0| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00000820| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000830| 00 00 00 00 00 41 00 72 | 00 69 00 61 00 6c 00 00 |.....A.r|.i.a.l..|
|00000840| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000850| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000860| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000870| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000880| 00 00 00 00 00 e4 04 00 | 00                      |........|.       |
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