Orbiting the ringed planet Saturn and its numerous moons, the Cassini spacecraft has been and continues to be a keystone of exploration of the Saturnian system and the properties of gaseous planets in our solar system.
A joint endeavor of NASA, the European Space Agency, or ESA, and the Italian Space Agency, Cassini launched in 1997 along with ESA's Huygens probe. The spacecraft contributed to studies of Jupiter for six months in 2000 before reaching its destination, Saturn, in 2004 and starting a string of flybys of Saturn's moons. That same year it released the Huygens probe on Saturn's moon Titan to conduct a study of the moon's atmosphere and surface composition. Now in its second extended mission, which goes through 2017, Cassini will make the first observations of a complete seasonal period for Saturn and its moons.
April 26, 1998: Cassini-Huygens flies by Venus to borrow gravitational energy and pick up speed for its journey to the Saturnian system.
June 24, 1999: Cassini-Huygens makes its second flyby of Venus.
August 18, 1999: Cassini-Huygens flies by Earth to pick up more speed.
December 30, 2000: Cassini-Huygens takes a six-month swing by Jupiter to pick up speed for its journey to Saturn and collaborates with NASA's Galileo spacecraft to study the Jovian system.
June 30, 2004: Cassini arrives at Saturn.
December 13, 2004: Cassini-Huygens makes its first flyby of a Saturnian moon, two in fact: Titan and Dione. For a full list of Cassini's flybys since 2004, visit: http://saturn.jpl.nasa.gov/mission/flybys/
December 24, 2004: The Cassini spacecraft releases the European Space Agency-built Huygens probe at Saturn's moon Titan.
January 14, 2005: The Huygens probe makes its descent through Titan's atmosphere to sample the chemical composition and surface properties of the Saturnian moon.
June 2008: Cassini completes its primary mission to explore the Saturn system and begins its mission extension (Cassini Equinox Mission).
September 2010: Cassini completes its extended mission (Cassini Equinox Mission) and begins its second mission extension (Cassini Solstice Mission), which goes through 2017 and will make the first observations of a complete seasonal period for Saturn and its moons. Learn more at http://saturn.jpl.nasa.gov/index.cfm .
- Cassini orbiter:
- Ion and neutral mass spectrometer
- Visible and infrared mapping spectrometer
- Composite infrared spectrometer
- Cosmic dust analyzer
- Radio and plasma wave instrument
- Cassini plasma spectrometer
- Ultraviolet imaging spectrograph
- Magnetospheric imaging instrument
- Dual technique magnetometer
- Descent imager and spectral radiometer
- Huygens atmospheric structure instrument
- Gas chromatograph and mass spectrometer
- Aerosol collector pyrolyzer
- Surface science package
- Doppler wind experiment