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Jupiter’s Surprises Are Revealed In First Juno Science Results

JunoCam image of Jupiter’s south pole, captured during its P6 pass on May 19, 2017. (Credit: NASA / SwRI / MSSS / Gerald Eichstädt / Seán Doran)

Today after almost 11 months in orbit the Juno team revealed the first scientific findings of the mission to the public via a NASA teleconference, giving us our first peek at the inner workings of Jupiter and how much of a surprise our Solar System’s largest planet is proving to be…which of course is quite fitting, as the spacecraft is named after the wife of Jupiter who could see through her mischievous husband’s veiling clouds.

“The new science results from Juno really are our first look close-up at how Jupiter works,” said Scott Bolton, principal investigator for the Juno mission. “For the first time we’re looking inside of Jupiter at the interior, and what we’re seeing is it doesn’t look at all like what we predicted.”

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Here’s Hubble’s Newest Knockout Portrait of Jupiter

Jupiter imaged by the Hubble Space Telescope on April 3, 2017. Credit: NASA, ESA, and A. Simon (GSFC)

On April 3, 2017, as Jupiter made its nearest approach to Earth in a year, NASA’s Hubble Space Telescope viewed the solar system’s largest planet in all of its up-close glory. At a distance of 415 million miles (668 million km) from Earth, Jupiter offered spectacular views of its colorful, roiling atmosphere, the legendary Great Red Spot, and its smaller companion at farther southern latitudes dubbed “Red Spot Jr.” Taken with Hubble’s Wide Field Camera 3, the image resolves details in Jupiter’s atmosphere as small as about 80 miles (129 km) across.

Read the full article on NASA’s Hubble site here, and check out a version I made with enhanced contrast and sharpness to bring out some details in Jupiter’s clouds below:

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Juno’s Latest Flight Over Jupiter’s South Pole

Animation of six images acquired by NASA’s Juno spacecraft on March 27, 2017.

On Monday, March 27, at 4:52 a.m. EDT (08:52 UTC) NASA’s Juno spacecraft made its fifth close pass of Jupiter, passing about 2,700 miles (4,400 km) above the planet’s clouds while traveling at a relative speed of 129,000 mph (57.8 kilometers per second). The images above, captured with the JunoCam instrument, show the giant planet’s south pole during this P5 pass.

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OSIRIS-REx Captures a Picture of Jupiter from L4

Jupiter imaged by OSIRIS-REx on Feb. 12, 2017. The visible moons are Callisto, Io, and Ganymede. (NASA/Goddard/University of Arizona)

NASA’s OSIRIS-REx may be designed to study asteroids close up but recently it’s captured a view of something farther away and much, much larger: the giant planet Jupiter and three of its largest moons at a distance of over 400 million miles!

The image was taken on Feb. 12, 2017, when the spacecraft was 76 million miles (122 million km) away from Earth—near the Earth-Sun L4 point—and 418 million miles (673 million km) from Jupiter. It’s a combination of two images taken with the PolyCam instrument, OSIRIS-REx’s longest range camera, which will capture images of the asteroid Bennu from a distance of over a million miles.

Read the full article here: NASA’s OSIRIS-REx Takes Closer Image of Jupiter

Juno Will Not Enter Tighter Orbits Around Jupiter, Team Decides

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NASA’s Juno spacecraft will remain in 53-day-long orbits of Jupiter rather than rocket down to smaller 14-day orbits, despite the mission’s original plan to do so. Announced today, Feb. 17, this decision comes after evaluation of issues with helium valves that prevented orbital reduction burns in October and December of 2016.

“During a thorough review, we looked at multiple scenarios that would place Juno in a shorter-period orbit, but there was concern that another main engine burn could result in a less-than-desirable orbit,” said Rick Nybakken, Juno project manager at NASA’s Jet Propulsion Laboratory in Pasadena, California. “The bottom line is a burn represented a risk to completion of Juno’s science objectives.”

Even though Juno will remain in wider orbits its scientific objectives and capability to achieve them shouldn’t be affected—if anything, it will get a chance to explore more of Jupiter’s magnetic environment while reducing the time it spends in some of the more damaging regions of Jupiter’s radiation belts.

The solar-powered Juno spacecraft launched aboard a ULA Atlas V 551 rocket from Cape Canaveral on Aug. 5, 2011. After nearly five years and 1.7 billion miles of travel Juno arrived in orbit at Jupiter on July 4, 2016.

Read the full story here: NASA’s Juno Mission to Remain in Current Orbit at Jupiter

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