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• Goddard Space Flight Center

Voyager 1/2

The Voyager mission used two identical spacecraft, Voyager 1 and Voyager 2, to study Jupiter, Saturn, and their satellites. After successfully completing the primary mission, Voyager 2 was diverted to study Uranus and Neptune. Voyager's mission objectives included investigating the characteristics of each planet's atmosphere and magnetic field and providing improved values for the mass, size, and shape of each planet and its satellites and rings.

Voyager 1/2 Resources

• Voyager Project Home Page
• Voyager Information at the NSSDC

Infrared Interferometer Spectrometer (IRIS)

The Infrared Interferometer Spectrometer (IRIS) was a Michelson interferometer and a single-channel radiometer. Its scientific objectives included determining the energy balance of the giant planets, the atmospheric composition and vertical temperature profile of the giant planets and Titan, the composition and temperature of the surfaces of the satellites without atmospheres, and the thermal characteristics of Saturn's rings.

IRIS Resources

• Voyager 1 IRIS Information at the NSSDC
• Voyager 2 IRIS Information at the NSSDC

PDS Data Sets

• Voyager 1/Voyager 2 IRIS calibrated data of Jupiter, Saturn, Uranus, and Neptune
  • Access data on-line at PDS Atmospheres Node

• Voyager 1/Voyager 2 IRIS derived data of Jupiter and Saturn
  • Access data on-line at PDS Atmospheres Node