1 00:00:22,009 --> 00:00:19,759 the date was October 19 NASA's Mariner 2 00:00:25,550 --> 00:00:22,019 spacecraft after traveling for months 3 00:00:27,320 --> 00:00:25,560 and 217 million miles began fulfilling 4 00:00:30,620 --> 00:00:27,330 its mission as it rendezvous with the 5 00:00:33,290 --> 00:00:30,630 planet Venus the Soviet Union also 6 00:00:35,390 --> 00:00:33,300 approached beam 2 spacecraft from two 7 00:00:37,280 --> 00:00:35,400 nations although the machines were of 8 00:00:43,640 --> 00:00:37,290 different design their purpose was the 9 00:00:46,880 --> 00:00:43,650 same by 1967 we actually had two 10 00:00:49,880 --> 00:00:46,890 successful missions make it to Venus the 11 00:00:52,310 --> 00:00:49,890 first one was the Soviet Venera 4 and 12 00:00:56,780 --> 00:00:52,320 nearly a month late it was followed up 13 00:00:58,430 --> 00:00:56,790 by the NASA's Mariner 5 the interesting 14 00:01:02,120 --> 00:00:58,440 thing about that that we were in the 15 00:01:04,910 --> 00:01:02,130 middle of the Cold War and despite that 16 00:01:07,760 --> 00:01:04,920 the Soviet and American scientists were 17 00:01:10,520 --> 00:01:07,770 working together cooperated shared the 18 00:01:14,240 --> 00:01:10,530 data and the picture that the scientists 19 00:01:19,219 --> 00:01:14,250 god of venus was much more inhospitable 20 00:01:21,770 --> 00:01:19,229 than they really imagined before by 1967 21 00:01:25,130 --> 00:01:21,780 if there were any doubts about whether 22 00:01:29,090 --> 00:01:25,140 Venus was livable or not those doubts 23 00:01:36,580 --> 00:01:29,100 were washed away it was not really 24 00:01:41,720 --> 00:01:39,590 now in an unexplored region of space 25 00:01:43,820 --> 00:01:41,730 mariner was placed on its mercury 26 00:01:46,520 --> 00:01:43,830 intercept course by the gravity of venus 27 00:01:51,340 --> 00:01:46,530 the initial target on this first dual 28 00:01:53,900 --> 00:01:51,350 planet mission Mariner 10 took more than 29 00:02:01,350 --> 00:01:53,910 3500 pictures during its rendezvous with 30 00:02:06,120 --> 00:02:03,480 for the first time after a decade of 31 00:02:08,550 --> 00:02:06,130 exploration Mariner 10 was carrying 32 00:02:09,930 --> 00:02:08,560 cameras we had ultraviolet cameras we 33 00:02:11,700 --> 00:02:09,940 could actually make some of the most 34 00:02:14,370 --> 00:02:11,710 beautiful images I mean here we have 35 00:02:16,260 --> 00:02:14,380 Venus the goddess of love and beauty and 36 00:02:44,440 --> 00:02:16,270 we had yet to really make a close-up 37 00:02:50,120 --> 00:02:47,990 pioneer Venus was the last NASA mission 38 00:02:52,370 --> 00:02:50,130 to go to Venus to study specifically its 39 00:02:55,450 --> 00:02:52,380 atmosphere in the tale in the dynamics 40 00:03:00,050 --> 00:02:55,460 of that atmosphere that was 30 years ago 41 00:03:04,090 --> 00:03:00,060 that we send it there it took a lot of 42 00:03:06,740 --> 00:03:04,100 detailed data that allowed us to test 43 00:03:09,500 --> 00:03:06,750 theories that we had about why Venus was 44 00:03:10,970 --> 00:03:09,510 such a strange environment and one of 45 00:03:13,430 --> 00:03:10,980 the most interesting of course is this 46 00:03:16,730 --> 00:03:13,440 idea of the runaway greenhouse effect as 47 00:03:28,610 --> 00:03:16,740 an explanation for why is Venus so super 48 00:03:31,520 --> 00:03:28,620 hot so while the Pioneer Venus orbiter 49 00:03:33,980 --> 00:03:31,530 was sending a steady stream of data back 50 00:03:36,200 --> 00:03:33,990 to earth the Soviet program undertook 51 00:03:38,990 --> 00:03:36,210 several more chilly eight missions back 52 00:03:41,290 --> 00:03:39,000 to Venice and the highlight of this set 53 00:03:43,820 --> 00:03:41,300 of missions was the near a 13 and 14 54 00:03:46,490 --> 00:03:43,830 which made it to the surface of Venice 55 00:03:48,890 --> 00:03:46,500 and while they will act today for 45 56 00:03:53,300 --> 00:03:48,900 minutes they took a handful of color 57 00:03:56,330 --> 00:03:53,310 panoramas of the Venetian surface now 58 00:03:59,360 --> 00:03:56,340 that they have been reprocessed they 59 00:04:04,310 --> 00:03:59,370 present a stunning view of the Venus 60 00:04:05,870 --> 00:04:04,320 surface and forgetting the heat toxic 61 00:04:15,740 --> 00:04:05,880 atmosphere and the pressure 62 00:04:17,870 --> 00:04:15,750 it really looks tranquil Venus the 63 00:04:22,020 --> 00:04:17,880 brightest star in the evening sky has 64 00:04:27,820 --> 00:04:25,750 since August of 1990 though a spacecraft 65 00:04:30,370 --> 00:04:27,830 named Magellan has peered beneath this 66 00:04:39,970 --> 00:04:30,380 veil of mystery to show us the surface 67 00:04:41,860 --> 00:04:39,980 of Venus in unsurpassed detail Magellan 68 00:04:45,940 --> 00:04:41,870 was a pretty simple and elegant mission 69 00:04:49,000 --> 00:04:45,950 it had one basic purpose and that was to 70 00:04:51,640 --> 00:04:49,010 get a detailed high-resolution map of 71 00:04:54,130 --> 00:04:51,650 the surface topography of the entire 72 00:04:57,190 --> 00:04:54,140 planet and what we saw was was an 73 00:05:00,070 --> 00:04:57,200 enormous surprise a very young surface 74 00:05:03,640 --> 00:05:00,080 lots of volcanic features there were 75 00:05:05,740 --> 00:05:03,650 lava planes and volcanoes and all kinds 76 00:05:08,170 --> 00:05:05,750 of features it was an unexpected and 77 00:05:19,450 --> 00:05:08,180 marvelous revelation of what was 78 00:05:22,450 --> 00:05:19,460 underneath those clouds at this point 79 00:05:25,000 --> 00:05:22,460 the American Soviet space missions are 80 00:05:27,580 --> 00:05:25,010 really museum pieces and while everybody 81 00:05:29,860 --> 00:05:27,590 is now excited about the new data and 82 00:05:32,350 --> 00:05:29,870 the new pictures images that we are 83 00:05:35,730 --> 00:05:32,360 getting from Mars Venice is really 84 00:05:39,340 --> 00:05:35,740 staying in the shadow right now but 85 00:05:42,280 --> 00:05:39,350 throughout the history Venus has 86 00:05:45,460 --> 00:05:42,290 provided us a lot of wonderful and 87 00:05:47,770 --> 00:05:45,470 interesting theories and answers to the 88 00:05:50,770 --> 00:05:47,780 questions that we have here on earth and 89 00:05:55,630 --> 00:05:50,780 which shone the light on our space in 90 00:05:57,250 --> 00:05:55,640 the universe but new players are coming 91 00:05:59,920 --> 00:05:57,260 into the game and with the European 92 00:06:03,490 --> 00:05:59,930 Space Agency sending a spacecraft there 93 00:06:07,990 --> 00:06:03,500 in 2006 and the Japanese space agency 94 00:06:10,720 --> 00:06:08,000 planning one in 2010 the Venice 95 00:06:13,300 --> 00:06:10,730 exploration is going to pick up and it 96 00:06:15,520 --> 00:06:13,310 really seems that a very good 97 00:06:17,440 --> 00:06:15,530 opportunity to go back because there are 98 00:06:21,730 --> 00:06:17,450 lots of things that we still don't know 99 00:06:24,340 --> 00:06:21,740 and with nearly two decades passed from