1 00:00:16,730 --> 00:00:13,340 this much we can say at this moment the 2 00:00:18,769 --> 00:00:16,740 planet Venus is a very hot planet the 3 00:00:24,960 --> 00:00:18,779 atmosphere is dense as primary 4 00:00:29,850 --> 00:00:26,640 there are many mysteries yet remaining 5 00:00:32,310 --> 00:00:29,860 about the planet Venus these mysteries 6 00:00:34,560 --> 00:00:32,320 will be solved by further analysis by 7 00:00:47,300 --> 00:00:34,570 present data and hopefully by more 8 00:00:53,180 --> 00:00:49,910 NASA the National Aeronautics and Space 9 00:01:01,580 --> 00:00:53,190 Administration presents Aeronautics and 10 00:01:04,010 --> 00:01:01,590 Space report next month NASA plans to 11 00:01:05,960 --> 00:01:04,020 launch an unmanned Mariner spacecraft to 12 00:01:07,910 --> 00:01:05,970 the planet Venus we know very little 13 00:01:11,300 --> 00:01:07,920 about Venus because we cannot see 14 00:01:13,250 --> 00:01:11,310 through its thick clouds the 540 pound 15 00:01:15,380 --> 00:01:13,260 Mariner will attempt to shed light on 16 00:01:17,300 --> 00:01:15,390 the origin and nature of the planet and 17 00:01:30,200 --> 00:01:17,310 its environment giving us additional 18 00:01:31,880 --> 00:01:30,210 knowledge about our solar system ever 19 00:01:33,950 --> 00:01:31,890 since the first people were gazing up at 20 00:01:39,499 --> 00:01:33,960 the skies they had to have noticed Venus 21 00:01:41,210 --> 00:01:39,509 it's so incredibly bright in ancient 22 00:01:43,070 --> 00:01:41,220 records at the Mayans the Greeks the 23 00:01:45,440 --> 00:01:43,080 Chinese people all over the world were 24 00:01:47,359 --> 00:01:45,450 seeing Venus up there mania and writing 25 00:01:49,520 --> 00:01:47,369 all sorts of stories about it but we 26 00:01:51,889 --> 00:01:49,530 could say that first modern observations 27 00:01:57,340 --> 00:01:51,899 of Venus began with the use of the 28 00:02:04,280 --> 00:02:01,310 Galileo in the early 1600s turned his 29 00:02:06,889 --> 00:02:04,290 telescope on to Venus and he looked at 30 00:02:09,350 --> 00:02:06,899 the phases of Venus and that really 31 00:02:12,320 --> 00:02:09,360 refuted the geocentric model that was in 32 00:02:14,839 --> 00:02:12,330 play and commonly accepted Galileo's 33 00:02:16,790 --> 00:02:14,849 observations were one of the first clear 34 00:02:25,400 --> 00:02:16,800 examples of how observing another world 35 00:02:26,660 --> 00:02:25,410 could tell you about your own for the 36 00:02:28,789 --> 00:02:26,670 next 300 years 37 00:02:31,820 --> 00:02:28,799 Venus continued to be an obvious target 38 00:02:33,620 --> 00:02:31,830 for telescopes these early observations 39 00:02:36,680 --> 00:02:33,630 eventually revealed that Venus had a 40 00:02:38,750 --> 00:02:36,690 thick dense atmosphere this discovery 41 00:02:41,150 --> 00:02:38,760 would define our image of the planet 42 00:02:43,640 --> 00:02:41,160 rather than seeing it as a meandering 43 00:02:50,890 --> 00:02:43,650 bright star Venus was now our mysterious 44 00:02:56,270 --> 00:02:54,290 early in the 20th century or making huge 45 00:02:59,960 --> 00:02:56,280 advances in science and all kinds of 46 00:03:02,509 --> 00:02:59,970 different fields with advances we start 47 00:03:04,759 --> 00:03:02,519 getting observations of Venus using 48 00:03:07,820 --> 00:03:04,769 spectroscopy and using ultraviolet 49 00:03:10,570 --> 00:03:07,830 wavelengths the astronomers of the time 50 00:03:12,860 --> 00:03:10,580 will make it fairly reasonable 51 00:03:15,350 --> 00:03:12,870 assumptions that the atmosphere on Venus 52 00:03:17,240 --> 00:03:15,360 is very similar to the moment earth and 53 00:03:20,800 --> 00:03:17,250 that the clouds that they were observing 54 00:03:22,880 --> 00:03:20,810 war made up of water vapour and 55 00:03:25,009 --> 00:03:22,890 subsequently they concluded that the 56 00:03:28,910 --> 00:03:25,019 Phoenician atmosphere was really wet and 57 00:03:31,670 --> 00:03:28,920 stormy and the service was swarming and 58 00:03:33,800 --> 00:03:31,680 a lot of astronomers at the time even 59 00:03:36,710 --> 00:03:33,810 concluded that that was really good 60 00:03:39,020 --> 00:03:36,720 conditions for life there's never been 61 00:03:40,119 --> 00:03:39,030 anything like this before in fact or 62 00:03:52,090 --> 00:03:40,129 picture 63 00:03:57,440 --> 00:03:54,650 NASA's Mariner spacecraft after 64 00:03:59,900 --> 00:03:57,450 traveling for months and 217 million 65 00:04:06,680 --> 00:03:59,910 miles began fulfilling its mission as it 66 00:04:09,110 --> 00:04:06,690 rendezvous with the planet Venus by 1967 67 00:04:12,800 --> 00:04:09,120 we actually had two successful missions 68 00:04:15,290 --> 00:04:12,810 make it to Venus the first one was the 69 00:04:17,900 --> 00:04:15,300 Soviet Venera four and nearly a month 70 00:04:21,320 --> 00:04:17,910 late it was followed up by the NASA's 71 00:04:23,330 --> 00:04:21,330 Mariner 5 the interesting thing about 72 00:04:27,770 --> 00:04:23,340 that that we were in the middle of the 73 00:04:29,810 --> 00:04:27,780 Cold War and despite that the Soviet and 74 00:04:32,650 --> 00:04:29,820 American scientists were working 75 00:04:35,270 --> 00:04:32,660 together cooperated shared the data and 76 00:04:38,840 --> 00:04:35,280 the picture that the scientists god of 77 00:04:43,250 --> 00:04:38,850 dienes was much more inhospitable than 78 00:04:45,470 --> 00:04:43,260 they really imagined by 1967 if there 79 00:04:48,200 --> 00:04:45,480 were any doubts about whether Venus was 80 00:04:54,409 --> 00:04:48,210 livable or not those doubts were washed 81 00:04:59,550 --> 00:04:57,390 now in an unexplored region of space 82 00:05:01,619 --> 00:04:59,560 Mariner was placed on its mercury 83 00:05:04,320 --> 00:05:01,629 intercept course by the gravity of Venus 84 00:05:09,240 --> 00:05:04,330 the initial target on this first dual 85 00:05:11,520 --> 00:05:09,250 planet mission Mariner 10 took more than 86 00:05:19,189 --> 00:05:11,530 3,500 pictures during its rendezvous 87 00:05:23,929 --> 00:05:21,200 for the first time after a decade of 88 00:05:26,360 --> 00:05:23,939 exploration Mariner 10 was carrying 89 00:05:27,739 --> 00:05:26,370 cameras we had ultraviolet cameras we 90 00:05:29,510 --> 00:05:27,749 could actually make some of the most 91 00:05:32,149 --> 00:05:29,520 beautiful images I mean here we have 92 00:05:34,070 --> 00:05:32,159 Venus the goddess of love and beauty and 93 00:06:02,260 --> 00:05:34,080 we had yet to really make a close-up 94 00:06:07,909 --> 00:06:05,779 pioneer Venus was the last NASA mission 95 00:06:10,309 --> 00:06:07,919 to go to Venus to study specifically its 96 00:06:13,219 --> 00:06:10,319 atmosphere in detail in the dynamics of 97 00:06:18,080 --> 00:06:13,229 that atmosphere that was 30 years ago 98 00:06:21,610 --> 00:06:18,090 that we send it there it took a lot of 99 00:06:24,260 --> 00:06:21,620 detailed data that allowed us to test 100 00:06:27,170 --> 00:06:24,270 the theories that we had about why Venus 101 00:06:28,520 --> 00:06:27,180 was such a strange environment and one 102 00:06:30,409 --> 00:06:28,530 of the most interesting of course is 103 00:06:33,010 --> 00:06:30,419 this idea of the runaway greenhouse 104 00:06:44,839 --> 00:06:33,020 effect as an explanation for why is 105 00:06:48,230 --> 00:06:44,849 Venus so super hot so while the Pioneer 106 00:06:50,869 --> 00:06:48,240 Venus orbiter was sending a steady 107 00:06:53,149 --> 00:06:50,879 stream of data back to earth the Soviet 108 00:06:55,580 --> 00:06:53,159 program undertook several more eight 109 00:06:57,499 --> 00:06:55,590 missions back to Venice and the 110 00:07:00,740 --> 00:06:57,509 highlight of this set of missions was 111 00:07:02,839 --> 00:07:00,750 Venera 13 and 14 which made it to the 112 00:07:05,899 --> 00:07:02,849 surface of Venice and while they will 113 00:07:08,089 --> 00:07:05,909 act today for 45 minutes they took a 114 00:07:12,019 --> 00:07:08,099 handful of color panoramas for the 115 00:07:15,860 --> 00:07:12,029 Venetian surface now that they have been 116 00:07:18,950 --> 00:07:15,870 reprocessed they present a stunning view 117 00:07:22,310 --> 00:07:18,960 of the Venus surface 118 00:07:23,810 --> 00:07:22,320 and forgetting the heat toxic atmosphere 119 00:07:32,040 --> 00:07:23,820 and the pressure 120 00:07:37,360 --> 00:07:35,020 Venis the brightest star in the evening 121 00:07:42,790 --> 00:07:37,370 sky has captured our imaginations for 122 00:07:45,040 --> 00:07:42,800 centuries since August of 1990 though a 123 00:07:47,560 --> 00:07:45,050 spacecraft named Magellan has peered 124 00:07:49,510 --> 00:07:47,570 beneath this veil of mystery to show us 125 00:07:59,050 --> 00:07:49,520 the surface of Venus in unsurpassed 126 00:08:01,750 --> 00:07:59,060 detail Magellan was a pretty simple and 127 00:08:05,140 --> 00:08:01,760 elegant mission and had one basic 128 00:08:07,480 --> 00:08:05,150 purpose and that was to get a detailed 129 00:08:10,690 --> 00:08:07,490 high-resolution map of the surface 130 00:08:13,030 --> 00:08:10,700 topography of the entire planet and what 131 00:08:16,420 --> 00:08:13,040 we saw was was an enormous surprise a 132 00:08:19,180 --> 00:08:16,430 very young surface lots of volcanic 133 00:08:22,300 --> 00:08:19,190 features there were lava planes and 134 00:08:24,310 --> 00:08:22,310 volcanoes and all kinds of features it 135 00:08:26,770 --> 00:08:24,320 was an unexpected and marvelous 136 00:08:34,279 --> 00:08:26,780 revelation of what was underneath those 137 00:08:40,380 --> 00:08:38,190 at this point the american-soviet space 138 00:08:43,110 --> 00:08:40,390 missions are really museum pieces and 139 00:08:45,510 --> 00:08:43,120 while everybody is now excited about the 140 00:08:48,270 --> 00:08:45,520 new data and the new pictures images 141 00:08:51,050 --> 00:08:48,280 that we are getting from Mars Venice is 142 00:08:55,680 --> 00:08:51,060 really staying in the shadow right now 143 00:08:58,560 --> 00:08:55,690 but throughout the history Venus has 144 00:09:01,800 --> 00:08:58,570 provided us a lot of wonderful and 145 00:09:04,110 --> 00:09:01,810 interesting theories and answers to the 146 00:09:07,110 --> 00:09:04,120 questions that we have here on earth and 147 00:09:11,820 --> 00:09:07,120 which shone the light on now space in 148 00:09:13,590 --> 00:09:11,830 the universe but new players are coming 149 00:09:16,260 --> 00:09:13,600 into the game and with the European 150 00:09:19,830 --> 00:09:16,270 Space Agency sending a spacecraft there 151 00:09:24,330 --> 00:09:19,840 in 2006 and the Japanese space agency 152 00:09:27,060 --> 00:09:24,340 planning one in 2010 the Venice 153 00:09:29,640 --> 00:09:27,070 exploration is going to pick up and it 154 00:09:31,860 --> 00:09:29,650 really seems that a very good 155 00:09:33,810 --> 00:09:31,870 opportunity to go back because there are 156 00:09:38,070 --> 00:09:33,820 lots of things that we still don't know 157 00:09:41,790 --> 00:09:38,080 and with nearly two decades passed from