1
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first Jupiter in 1979 then Saturn two

2
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years later

3
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Uranus in 1986 and finally Neptune the

4
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blue giant all part of Voyager twos

5
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12-year grand tour of the outer planets

6
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having traveled over four billion miles

7
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through the solar system the spacecraft

8
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trained its aging cameras and electronic

9
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sensors on the mysterious blue planet

10
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revealing an unexpectedly turbulent

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world of violent storms and backpedaling

12
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winds up to 700 miles per hour a

13
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particular interest with the swirling

14
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energetic dark spots recording the

15
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project scientist dr. in stone we

16
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believe that these large spots are in

17
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fact huge hurricane like storm systems

18
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when you have opposing jet streams they

19
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tend to generate vortices or small

20
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storms and those small storms collide

21
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with each other and accumulate to make

22
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one large storm Voyager 2 also found six

23
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new moons around Neptune and produced

24
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imagery of the planets three rings

25
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believed to be debris left from

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collisions between larger objects after

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passing just 3,000 miles over its cloud

28
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tops Voyager turned its attention to

29
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Neptune's largest moon Triton a five

30
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mile tall geyser shooting dark particles

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into its atmosphere was just one of the

32
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surprises Triton had to offer here is a

33
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moon which is in a retrograde orbit that

34
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is it's orbiting backwards around

35
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Neptune compared to the way Neptune is

36
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rotating on tablet there was methane ice

37
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frozen natural gas on a surface and

38
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probably frozen nitrogen on a surface we

39
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had never seen a moon with those ices on

40
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their surface it is the coldest object

41
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we have seen in the solar system almost

42
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Voyager's accomplishments are even more

43
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impressive considering that it was

44
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originally supposed to visit only

45
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Jupiter and Saturn Uranus and Neptune

46
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were added bonuses achievable because of

47
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the spacecraft's remarkable performance

48
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huge antennas on the ground which by the

49
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time it rendezvous with Neptune took

50
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over four hours to reach Earth and the

51
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transmitter on the spacecraft used to

52
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send back those signals is only about as

53
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powerful as the light bulb in a

54
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refrigerator like its sister ship

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Voyager 1 Voyager 2 is now bound for the

56
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edges of the solar system other

57
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spacecraft such as Galileo scheduled for

58
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a return to Jupiter and Cassini which

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will revisit Saturn are slated to make

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even more detailed studies of the

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planets

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the voyagers legacy of discovery can

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never be duplicated Voyager will be

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regarded as the quintessential mission

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of exploration there has been no other

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mission which has explored so many new

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worlds and there can be no other mission

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which will do that in the future only

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Voyager has had the opportunity of

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visiting in sequence for giant planets