Juno Jupiter Orbiter Mission Overview 2011 NASA Kennedy Space Center

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more at: http://scitech.quickfound.net/astro/p... 'The Juno spacecraft will look deep beneath Jupiter's swirling curtains of clouds to decipher the planet's structure and history during a mission that will begin with a 5-year flight through deep space. The journey will begin aboard an Atlas V rocket equipped with five booster rockets and a large Centaur upper stage. In this webcast, members of NASA's Launch Services Program and Juno's principal investigator detail what it takes to prepare an interplanetary mission and what potential discoveries lie ahead.' Public domain film from NASA. also see: Simulation of What Juno Will 'See' From Jupiter Orbit ) Juno is a NASA New Frontiers mission to the planet Jupiter. Juno was launched from Cape Canaveral Air Force Station on August 5, 2011 and will arrive in July 2016. The spacecraft is to be placed in a polar orbit to study Jupiter's composition, gravity field, magnetic field, and polar magnetosphere. Juno will also search for clues about how the planet formed, including whether it has a rocky core, the amount of water present within the deep atmosphere, how its mass is distributed, and its deep winds, which can reach speeds of 618 kilometers per hour (384 mph)... from "AN OVERVIEW OF THE JUNO MISSION TO JUPITER" Arriving in orbit around the planet Jupiter in 2016 after a five-year journey, the Juno spacecraft will begin a one-year investigation of the gas giant in order to understand its origin and evolution by determining its water abundance and constraining its core mass. In addition, Juno will map the planet's magnetic and gravitational fields, map its atmosphere, and explore the three- dimensional structure of Jupiter's polar magnetosphere and auroras. These investigations will be conducted over the course of thirty-two 11-day elliptical polar orbits of the planet. The orbits are designed to avoid Jupiter's highest radiation regions. The spacecraft is a spinning, solarpowered system carrying a complement of eight science instruments for conducting the investigations. The spacecraft systems and instruments take advantage of significant design and operational heritage from previous space missions. Juno's scientific payload consists of a dual-technique magnetometer, a microwaveradiometer for mapping atmospheric composition and dynamics, a dualfrequency radio-gravity science system, plasma detectors, energetic particle detectors, an ultraviolet imager/spectrometer, a plasma wave experiment, and a visible camera for imaging Jupiter's poles for the first time. Operations at Jupiter are simple and repetitive. When the investigation is complete, the spacecraft will de-orbit into the planet itself. Juno's goal is to understand the origin and evolution of Jupiter. As a gas giant, Jupiter can provide a wealth of knowledge that can help us understand the origin of our own solar system as well understand other planetary systems being discovered around other stars. Using a spinning, solar powered spacecraft, Juno will produce global maps of the gravity, magnetic fields, and atmospheric composition from a unique polar orbit with a close perijove (closest point to Jupiter). The nominal 32-orbit mission will produce an extensive sample of Jupiter's full range of latitudes and longitudes. Juno will accomplish its mission through a combination of in situ and remote observations. Juno's investigations divide into four major themes: Origin, Interior Structure, Atmospheric Composition and Dynamics, and the Polar Magnetosphere. Origin discriminates among different models for giant planet formation, constraining the mass of the solid core by measuring the gravitational field and determining the abundance of certain heavy elements (oxygen and nitrogen) in Jupiter's atmosphere via microwave observations of water and ammonia. Interior Structure maps the gravitational and magnetic fields with sufficient resolution to determine the origin of the magnetic field, the core mass and the nature of deep convection. Atmospheric Composition and Dynamics is measured by atmospheric sounding to pressures greater than 100 bars, producing a three-dimensional map of the water and ammonia abundances; and determining how deep the belts, zones, and other features penetrate. The largest structure in the solar system, Jupiter's polar magnetosphere and its coupling to the atmosphere are explored by measuring auroral emissions, plasmas, fields, waves and radio emissions...

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