Voyager 2

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Voyager 2
Voyager spacecraft.jpg
Voyager 2
Mission type Planetary exploration
Operator NASA / JPL[1]
COSPAR ID 1977-076A[2]
SATCAT № 10271[3]
Wabsteid voyager.jpl.nasa.gov
Mission duration 39 years, 11 months and 3 days elapsed
Planetary mission: 12 years, 1 month, 12 days
Interstellar mission: 27 years, 9 months and 21 days elapsed (continuing)
Spacecraft properties
Manufacturer Jet Propulsion Laboratory
Launch mass 825.5 kilograms (1,820 lb)
Pouer 420 watts
Start o mission
Launch date August 20, 1977, 14:29:00 (1977-08-20UTC14:29Z) UTC
Rocket Titan IIIE
Launch steid Cape Canaveral LC-41
Fleebi o Jupiter
Closest approach Julie 9, 1979, 22:29:00 UTC
Distance 570,000 kilometers (350,000 mi)
Fleebi o Saturn
Closest approach August 25, 1981, 03:24:05 UTC
Distance 101,000 km (63,000 mi)
Fleebi o Uranus
Closest approach Januar 24, 1986, 17:59:47 UTC
Distance 81,500 km (50,600 mi)
Fleebi o Neptune
Closest approach August 25, 1989, 03:56:36 UTC
Distance 4,951 km (3,076 mi)

Voyager 2 is a space probe launched bi NASA on August 20, 1977 tae study the ooter planets. Pairt o the Voyager programme, it wis launched 16 days afore its twin, Voyager 1, on a trajectory that teuk langer tae reach Jupiter an Saturn but enabled further encoonters wi Uranus an Neptune.[4] It is the anly spacecraft tae hae ever veesited either o the ice giants.

References[eedit | eedit soorce]

  1. "VOYAGER:Mission Information". NASA. 1989. Retrieved Januar 2, 2011. 
  2. "Voyager 2". US National Space Science Data Center. Retrieved 25 August 2013. 
  3. "VOYAGER 2". N2YO. Retrieved 25 August 2013. 
  4. Butrica, Andrew. From Engineering Science to Big Science. p. 267. Retrieved 2015-09-04. Despite the name change, Voyager remained in many ways the Grand Tour concept, though certainly not the Grand Tour (TOPS) spacecraft. Voyager 2 was launched on August 20, 1977, followed by Voyager 1 on September 5, 1977. The decision to reverse the order of launch had to do with keeping open the possibility of carrying out the Grand Tour mission to Uranus, Neptune, and beyond. Voyager 2, if boosted by the maximum performance from the Titan-Centaur, could just barely catch the old Grand Tour trajectory and encounter Uranus. Two weeks later, Voyager 1 would leave on an easier and much faster trajectory, visiting Jupiter and Saturn only. Voyager 1 would arrive at Jupiter four months ahead of Voyager 2, then arrive at Saturn nine months earlier. Hence, the second spacecraft launched was Voyager 1, not Voyager 2. The two Voyagers would arrive at Saturn nine months apart, so that if Voyager 1 failed to achieve its Saturn objectives, for whatever reason, Voyager 2 still could be retargeted to achieve them, though at the expense of any subsequent Uranus or Neptune encounter.