Philosophy
NASA's Juno spacecraft, set to arrive at Jupiter in 2016, carries three APL-built Jupiter Energetic-particle Detector Instrument (JEDI) units. Each unit weighs 15.5 pounds and uses 7 watts of power. For scale, the box that contains electronics and the sensor is approximately 9-by-5-by-5 inches; the circular "hockey puck" detector itself is 4 inches across and 1.7 inches tall.
Other than the three LEGO figurines, Juno is supplied with an array of scientific instruments.
A Johns Hopkins Applied Physics Laboratory (APL) instrument that will delve into the dynamics of the solar system's largest planetary magnetic field was launched Friday aboard NASA's Juno spacecraft.
The Jupiter Energetic-particle Detector Instrument (JEDI) will measure energetic particles that flow through and are trapped within Jupiter's space environment, called a "magnetosphere," and study how those particles interact with Jupiter's swirling atmosphere.
That interaction generates Jupiter's bright northern and southern lights, called aurora, the most powerful in the solar system. JEDI findings will contribute to Juno's overall mission to find out more about the gas giant's origins, structure, atmosphere and magnetosphere.
"Because the processes operating within Jupiter's space environment are so powerful, we must study the planet to make the connection between such Earth-space phenomena as auroras, radiation belts and magnetic field dynamics, and similar astrophysical processes elsewhere in the universe," says Barry Mauk, JEDI lead investigator at APL.
Juno, which launched at 12:15 p.m. EDT aboard an Atlas V rocket from Cape Canaveral Air Force Station, Fla., will reach Jupiter in 2016 and circle over the planet's poles for a year. One of nine instrument packages on Juno, JEDI consists of three small shoebox-sized, fast-processing electronic detectors positioned to provide a continuous 360-degree sampling view of the space around Juno.
The sensors will work with other Juno magnetospheric instruments to investigate Jupiter's polar space environment. Scientists are looking for how such a strong magnetic field, thought to be generated deep within the pressurized hydrogen interior of Jupiter, combines with other unique elements of Jupiter's extended magnetosphere to spark the auroras.
"JEDI's sensors will be trained on the higher-energy particles that help to generate Jupiter's aurora, that heat and ionize Jupiter's upper atmosphere, and that offer clues to the structure of Jupiter's near-planet space environment," Mauk says.
"We really want to know what happens in the aurora that causes these particles to accelerate to such high energies, and Juno will be the first spacecraft to fly within the region where this acceleration actually takes place."
APL has built 64 spacecraft and approximately 200 space instruments over the past five decades, including other Jupiter-observing particle instruments. The Low-Energy Charged Particle Detector on Voyager 1 was key to the discovery of charged particles around the giant planet; measurements from the Energetic Particle Detector on the Galileo spacecraft were critical to determining many of the fundamental processes operating within Jupiter's magnetosphere.
The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) instrument, flying past Jupiter on the Pluto-bound New Horizons spacecraft, gathered data indicating that the dynamics of Jupiter's magnetosphere, driven by the large amounts of volcanic material from its moon Io and by coupling to Jupiter's rapid spin, extend millions of miles away from Jupiter within the comet-like tail of the planet's magnetosphere.
Atlas V rocket launched Juno into space and on its way to Jupiter
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Philosophy
JEDI onboard Juno probe
NASA's Juno spacecraft, set to arrive at Jupiter in 2016, carries three APL-built Jupiter Energetic-particle Detector Instrument (JEDI) units. Each unit weighs 15.5 pounds and uses 7 watts of power. For scale, the box that contains electronics and the sensor is approximately 9-by-5-by-5 inches; the circular "hockey puck" detector itself is 4 inches across and 1.7 inches tall.Other than the three LEGO figurines, Juno is supplied with an array of scientific instruments.
"Space Scientists Seek Returns from JEDI"
August 8th, 2011
Space Daily
August 8th, 2011
Space Daily
A Johns Hopkins Applied Physics Laboratory (APL) instrument that will delve into the dynamics of the solar system's largest planetary magnetic field was launched Friday aboard NASA's Juno spacecraft.
The Jupiter Energetic-particle Detector Instrument (JEDI) will measure energetic particles that flow through and are trapped within Jupiter's space environment, called a "magnetosphere," and study how those particles interact with Jupiter's swirling atmosphere.
That interaction generates Jupiter's bright northern and southern lights, called aurora, the most powerful in the solar system. JEDI findings will contribute to Juno's overall mission to find out more about the gas giant's origins, structure, atmosphere and magnetosphere.
"Because the processes operating within Jupiter's space environment are so powerful, we must study the planet to make the connection between such Earth-space phenomena as auroras, radiation belts and magnetic field dynamics, and similar astrophysical processes elsewhere in the universe," says Barry Mauk, JEDI lead investigator at APL.
Juno, which launched at 12:15 p.m. EDT aboard an Atlas V rocket from Cape Canaveral Air Force Station, Fla., will reach Jupiter in 2016 and circle over the planet's poles for a year. One of nine instrument packages on Juno, JEDI consists of three small shoebox-sized, fast-processing electronic detectors positioned to provide a continuous 360-degree sampling view of the space around Juno.
The sensors will work with other Juno magnetospheric instruments to investigate Jupiter's polar space environment. Scientists are looking for how such a strong magnetic field, thought to be generated deep within the pressurized hydrogen interior of Jupiter, combines with other unique elements of Jupiter's extended magnetosphere to spark the auroras.
"JEDI's sensors will be trained on the higher-energy particles that help to generate Jupiter's aurora, that heat and ionize Jupiter's upper atmosphere, and that offer clues to the structure of Jupiter's near-planet space environment," Mauk says.
"We really want to know what happens in the aurora that causes these particles to accelerate to such high energies, and Juno will be the first spacecraft to fly within the region where this acceleration actually takes place."
APL has built 64 spacecraft and approximately 200 space instruments over the past five decades, including other Jupiter-observing particle instruments. The Low-Energy Charged Particle Detector on Voyager 1 was key to the discovery of charged particles around the giant planet; measurements from the Energetic Particle Detector on the Galileo spacecraft were critical to determining many of the fundamental processes operating within Jupiter's magnetosphere.
The Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI) instrument, flying past Jupiter on the Pluto-bound New Horizons spacecraft, gathered data indicating that the dynamics of Jupiter's magnetosphere, driven by the large amounts of volcanic material from its moon Io and by coupling to Jupiter's rapid spin, extend millions of miles away from Jupiter within the comet-like tail of the planet's magnetosphere.
Atlas V rocket launched Juno into space and on its way to Jupiter
- Roughly 865 Million Dollars...not Bad For Voyager 1 And 2...good Investment
"Voyager 1 set to burst solar system bubble, move to parts unknown" by Amy Hubbard September 4th, 2012 The Los Angeles Times How long does it take to fly to the edge of the solar system? At least 35 years. Voyager 1 is there now, carrying...
- Deceased--david C. Slater
David C. Slater August 12th, 1957 to May 30th, 2011 "Remembering New Horizons Co-Investigator Dr. David Charles Slater" by Alan Stern August 12th, 2011 New Horizons I have written here more than once that on long space missions like...
- Atlas V Rocket Launched Juno Into Space And On Its Way To Jupiter
"Juno probe heads for Jupiter from Cape Canaveral" August 5th, 2011 BBC NEWS A $1.1bn (£0.7bn) unmanned space mission has launched from Florida on a journey to the planet Jupiter. The Juno spacecraft will cruise beyond Mars to put itself in orbit...
- Juno Ready To Launch...off To Jupiter
This is what NASA does best. "NASA probe poised for launch to Jupiter" by Irene Klotz July 28th 2011 Reuters A NASA satellite was hoisted aboard an unmanned Atlas 5 rocket at Cape Canaveral Air Force Station Wednesday in preparation for launch next...
- Nasa's Polar Satellite--"the Broken Heart"/death
NASA's Polar satellite had out lived its parameters of life by a decade and provided volumes of data. Again, a few dollars spent and a wealth of information taken. It is somewhat sad to see the last photograph taken... As far as endings go, this one’s...