Voyager 2

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Voyager 2
Voyager spacecraft.jpg
Voyager 2
Mission teepPlanetary exploration
OperatorNASA / JPL[1]
COSPAR ID1977-076A[2]
SATCAT no.10271[3]
Mission duration43 years, 1 month and 2 days elapsed
Planetary mission: 12 years, 1 month, 12 days
Interstellar mission: 30 years, 11 months and 20 days elapsed (continuing)
Spacecraft properties
ManufacturerJet Propulsion Laboratory
Launch mass825.5 kilogram (1,820 lb)
Pouer420 watts
Stairt o mission
Launch dateAugust 20, 1977, 14:29:00 (1977-08-20UTC14:29Z) UTC
RocketTitan IIIE
Launch steidCape Canaveral LC-41
Fleebi o Jupiter
Closest approachJulie 9, 1979, 22:29:00 UTC
Distance570,000 kilometer (350,000 mi)
Fleebi o Saturn
Closest approachAugust 25, 1981, 03:24:05 UTC
Distance101,000 km (63,000 mi)
Fleebi o Uranus
Closest approachJanuar 24, 1986, 17:59:47 UTC
Distance81,500 km (50,600 mi)
Fleebi o Neptune
Closest approachAugust 25, 1989, 03:56:36 UTC
Distance4,951 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 January 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.