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The rocket carrying Gagarin's Vostok 1 spacecraft blasted off from Baikonur Cosmodrome at 6:07 a.m. local time at the Soviet Union launch site. []

Reaching unprecedentedat the time, the spacecraft broke free of the Earth's gravitational pull and entered orbit around the planet, circling once before re-entering the atmosphere and landing back on Soviet soil.

Here are six facts about Gagarin's historic mission: How long was Gagarin up there?

The total mission lasted just 108 minutes, and the trip once around the Earth at 17,500 mph (most of the way) took less than an hour and a half. []

In that time, Vostok 1 completed one not-quite-circular orbit, at a maximum altitude of 203 miles, before slowing down to the point that the capsule was pulled back into the atmosphere for ballistic re-entry.  

What kind of vessel was the Vostok 1?

The Vostok was a spherical capsule, designed to eliminate changes in center of gravity. In that way, the craft could assure comfort for its one-man crew no matter its orientation. What it wasn't designed to do was land with a human still on board.

Unlike later Russian space vehicles, such as the modern , Vostok 1 was not outfitted with thrusters to help slow it down as it hea,14463,60371,84696,71540,32535,75924,66524,59419,22419,59992,69779,26810,15498,58995,44564,86737,42610,45940,16503,96566,31088,95301,45487,78442,19512,11086,99741,57003,86379,31246,75088,93471,26515,15342,36478,22334,65797,27615,94794,78528,44977,72049,33748,18901,56662,66823,53788,88254,75473,77671,52967,83328,86201,72637,87148,83949,19091,29393,34678,67180,91611,68808,45705,72584,93160,89991,75383,99802,37017,48536,66633,59712,80919,70368,18158,52517,60265,34422,45342,47456,25396,52150,45748,41045,56621,91225,29433,88227,45773,32706,47801,39007,47608,78816,90111,47235,34771,25824,57381,52378,84473,12065,31277,99133,79905,63760,16585,77774,47893,15407,23954,74804,19196,39982,65017,38417,52795,74564,86354,47452,56839,64301,23050,46677,75358,36768,88753,18135,85736,32063,57666,50691,81765,32098,76618,30231,60033,53560,65181,13567,72671,79605,10055,73892,14747,66575,44307,45194,72318,32883,13631,64905,55295,31126,86440,20644,66558,27327,87705,18327,17773,69451,46578,51523,13505,23197,93876,40269,42729,10755,74885,58015,98643,32013,91418,31125,49522,92873,30608,71347,43685,27743,66887,25317,34722,67241,16963,73375,18159,93137,84558,69629,58189,19079,89437,85460,71467,10551,68083,63122,95140,93012,97803,58006,78499,85051,81314,57682,77709,30655,76516,75607,38640,36767,75395,60494,35073,23046,54298,53313,63156,59457,23793,65759,15222,31408,94069,76346,63625,18626,50053,38530,41348,19530,38731,56654,90852,91780,47916,44584,71719,91327,35951,22582,22586,27091,10084,15746,91301,56867,74747,55406,17710,36700,18065,36620,18882,34582,37406,48057,51631,72763,52381,87323,91444,88189,72416,83660,26880,86540,51418,90652,73664,89082,55236,73692,64267,93511,62497,89327,35364,18987,46802,88699,46406,16583,51678,37030,24023,67023,39716,54876,78036,57127,69226,22897,43217,57943,53658,43594,95937,21963,20875,10292,93665,61150,72029,60304,74572,14284,36587,61558,36074,88694,63510,54663,99847,21481,67019,30431,47467,47027,65187,42198,88322,31401,55285,69142,67412,99069,61103,45573,76801,64810,24507,27190,31789,37233,48514,93750,21292,21954,35648,25744,46979,87976,73541,40207,48391,18679,31765,72422,80598,52826,55820,48278,50576,23406,35998,17421,11047,95072,75192,63326,50146,98704,32565,96619,46840,28750,97969,99176,12679,28224,29141,75954,32763,20450,24705,20765,54793,57925,31915,75787,29072,64393,88220,19176,23844,24837,60037,20529,43190,49723,63886,49767,52155,16527,19414,64944,23254,48882,21550,19458,93443,26144,68825,31828,94231,94426,69378,94581,98878,94154,23604,11171,25394,32087,38283,52732,79626,11529,88649,24355,18594,51305,85650,73744,24866,43716,51539,17059,13042,23333,51566,78277,67017,22524,20060,53473,64669,16038,77056,14914,87181,29122,41577,67872,44983,92530,17548,44123,86608,78143,58877,42631,77753,23311,68430,41683,52632,48305,13469,42140,75821,70367,45980,16267,59449,40925,22344,21043,66880,82026,82080,95274,82808,41389,49451,68825,48770,56143,35762,78228,56359,48953,79687,43337,58552,68006,54357,28259,72007,43659,54304,12258,65243,17998,80916,33162