The old spacecraft updates the Jupiter mystery of the quarter century


NASA's old spacecraft updates quarter-century Jupiter mystery

In this animated GIF, the clouds on the circumference of some of Jupiter’s polar cyclones rotate counterclockwise, while the center of the cyclone rotates clockwise. The Junochem images used for this animation were taken at an altitude of about 18,000 miles (28,567 kilometers) above the top of Jupiter’s cloud. Gerald Eichstein, a civil scientist, processed images to enhance color and contrast. Credit: NASA / JPL-Caltech / SRI / MSSS. Image Processing: Gerald Exted CC BY

Twenty-five years ago, NASA sent the first probe into history into the atmosphere of the largest planet in the solar system. But the information returned by Galileo’s investigation while landing on Jupiter caused an itch in the head: it was in a much more atmospheric atmosphere than scientists expected. New data from NASA’s old spacecraft suggest that these “hot spots” are wider and deeper than expected. Jupiter’s hot spot findings came out with an update on Jupiter’s polar cyclone on December 11 during a virtual media briefing at the Fall Conference of the American Geophysical Union.

“Huge planets have a deeper atmosphere like Earth without a solid or liquid base,” said Scott Bolten, chief investigator at the Southwest Research Institute in San Antonio. “To better understand what’s going on deep in one of these worlds, you need to look below the cloud level. Juno, who recently completed Jupiter’s 29th Close-up Science Pass, does the same. Observations of the spacecraft on Old Will shed light. Raises mysteries and new questions – not just about Jupiter, but about all the gas giant worlds. “

Long On December 1, 1995 1995 on, Galileo 57 36 minutes, 36 seconds second data from Juno faced long 57 minutes, stalks. When the probe was dry and windy, the astonished scientists attributed the fact that the probe landed in one of the 75 75 -p pounds (-34 kilograms) of Jupiter’s relatively rare hotspots વાતા the atmospheric “desert.” Was the gas giant’s northern equatorial region. But the results of Juno’s microwave instrument suggest that the entire northern equatorial belt – a broad, brown, cyclonic band that wraps around the planet above the gas giant’s equator – is usually a very dry region.






This time video clip shows the speed of the cyclone at the South Pole of Jupiter from February to November 2020. This information has been collected by Jovian Infrared Oral Mapper (JIRIM) aboard NASA’s old spacecraft. Credit: NASA / JPL-Caltech / SWRI / ASI / IANF / JIRAM

The implication is that hot spots may not isolate the “desert”, but rather, in Jupiter’s atmosphere windows can penetrate a large area that may be hotter and drier than other areas. Juno’s high resolution data show that this Jovian hot spot is associated with the breakdown of the planet’s cloud deck, providing a glimpse of Jupiter’s deep atmosphere. They also show hot spots filled with clouds and active hurricanes, recently discovered by Juno and fueling high-itude elevation electrical discharges known as “shallow lightning”. This discharge, which occurs in the cold upper parts of Jupiter’s atmosphere when ammonia dissolves in water, is part of this puzzle.

“Climb up into the atmosphere, where shallow electricity is seen, water and ammonia combine and disappear for Juno’s microwave instrument. This is where a special kind of lump forms which we call ‘mushbals’,” , Juno said. Co-investigator at the University C ડીte d’Azur in Nice, France. “These mussels get heavier and fall deeper into the atmosphere, creating a large area that is disturbed by both ammonia and water. . “






This animation takes viewers into a storm in Jupiter’s atmosphere, where water ammonia particles (represented in green) collect water ice from the atmosphere. This process produces a “mushb” l – a special pride made of the outer part of a partially liquid water-ammonia mush and a solid water-ice crust. Within about 10 to 60 minutes (depending on their size) Reaches layers, where it melts and evaporates rapidly. And reaches 450 MPF (700 kPF) during their descent. Credit: NASA / JPL-Caltech / SRRI / MSSS / CNRS

Jupiter Weather Report

Last year the Juno team reported a cyclone at the South Pole. At the time, Juno’s Jovian Infrared ur Roller Mapper Instrument had obtained images of the new cyclone, which appeared to be trying to join five established cyclones revolving around a huge central cyclone at the South Pole.

“That sixth hurricane, the group’s child, was found to be changing the geometric alignment at the pole from the Pentagon to the hexagon.” “But, alas, the attempt failed; the child kicked out of the cyclone, went away and eventually disappeared.”

Currently, there is no agreed theory in the team as to how some of these giant polar vortices form અથવા or when others are born, grow and then die relatively quickly when some appear stable. Work is underway on atmospheric models, but currently no single model seems to explain everything. The key to understanding circular hurricanes is how new hurricanes appear, develop, and are accepted or rejected, which can help explain how they function normally in the atmosphere of such giant planets.


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Testimonial: Old spacecraft updates quarter-century Jupiter mystery (2020, December 18) https://phys.org/news/2020-12- Old-spacecraft-quarter-centri-Jupiter-mystery. Html to 18 December 2020

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