Overview of Mission Juno

Unlocking Jupiter's Secrets

Juno will improve our understanding of the solar system's beginnings by revealing the origin and evolution of Jupiter.

What will Juno Do?

• Determine how much water is in Jupiter's atmosphere, which helps determine which planet formation theory is correct (or if new theories are needed)
• Look deep into Jupiter's atmosphere to measure composition, temperature, cloud motions and other properties
• Map Jupiter's magnetic and gravity fields, revealing the planet's deep structure
• Explore and study Jupiter's magnetosphere near the planet's poles, especially the auroras – Jupiter's northern and southern lights – providing new insights about how the planet's enormous magnetic force field affects its atmosphere
• Mission Timeline
• Launch - August 5, 2011
• Deep Space Maneuvers - August/September 2012
• Earth flyby gravity assist - October 2013
• Jupiter arrival - July 2016
• Spacecraft will orbit Jupiter for 20 months (37 orbits)
• End of mission (deorbit into Jupiter) - February 2018

The Juno mission is the second spacecraft designed under NASA's New Frontiers Program. The first is the Pluto New Horizons mission, which flew by the dwarf planet in July 2015 after a nine-and-a-half-year flight. The program provides opportunities to carry out several medium-class missions identified as top priority objectives in the Decadal Solar System Exploration Survey, conducted by the Space Studies Board of the National Research Council in Washington.

JPL manages the Juno mission for the principal investigator, Scott Bolton, of Southwest Research Institute in San Antonio. The Juno mission is part of the New Frontiers Program managed at NASA's Marshall Space Flight Center in Huntsville, Ala. Lockheed Martin Space Systems, Denver, built the spacecraft. Launch management for the mission is the responsibility of NASA's Launch Services Program at the Kennedy Space Center in Florida. JPL is a division of the California Institute of Technology in Pasadena.

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