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New imagery from NASA’s Hubble Space Telescope is revealing details never before seen on Jupiter. High-resolution maps and spinning globes (rendered in the 4k Ultra HD format) are the first products to come from a program to study the solar system’s outer planets each year using Hubble. The observations are designed to capture a broad range of features, including winds, clouds, storms and atmospheric chemistry. These annual studies will help current and future scientists see how such giant worlds change over time.
Nearly one hundred years later in 1979, the Spot’s north-south extent has remained virtually unchanged, but it’s girth had shrunk to 25,000 km (15,535 miles) or just shy of two Earth diameters. Recent work done by expert astrophotographer Damian Peach using the WINJUPOS program to precisely measure the GRS in high resolution photos over the past 10 years indicates a continued steady shrinkage:
If the shrinkage continues, “Great” may soon have to be dropped from the Red Spot’s title. In the meantime, Oval BA (nicknamed Red Spot Jr.) and about half the size of the GRS, waits in the wings. Located along the edge of the South Temperate Belt on the opposite side of the planet from the GRS, Oval BA formed from the merger of three smaller white ovals between 1998 and 2ooo. Will it give the hallowed storm a run for its money? We’ll be watching.
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originally posted by: mithrawept
Spectacular.
So will the great red spot disappear altogether at some point in the future?
originally posted by: Klassified
a reply to: gortex
Cool.
I thought Jupiter was a masculine deity, and therefore, planet. Venus on the other hand...
originally posted by: wildespace
originally posted by: Klassified
a reply to: gortex
Cool.
I thought Jupiter was a masculine deity, and therefore, planet. Venus on the other hand...
Jupiter is most definitely a "he", being the Roman equivalent of Zeus.
However, the term "planet" may have the feminine gender, being short for the Greek term for a "wandering star". In Russian (which is my first language), a planet is a "she", aka planeta, and same goes for the Russian for for a star - zvezda.
originally posted by: 0bserver1
The all seeing eye of Jupiter.
The wind speed would be so high, it would blow the flesh from your bones.
Is it just me or did the spot changed colour?
And then to think of how many times the earth fits into Jupiter ..
originally posted by: stormcell
originally posted by: mithrawept
Spectacular.
So will the great red spot disappear altogether at some point in the future?
There's a general theory that these sort of turbulent events are caused by the interaction between the rotation of the small surface core and the underlying gas layers - like the flow of a river over rocks in the riverbed creating eddies and whirlpools. The varying colors are caused by different gas layers becoming visible, since each type of gas molecule has different color.
Normally there is such a difference in density that these would separate out and we only see the top layer, but the turbulence caused by an obstacle like a ridge or the different speeds at different latitudes causes mixing.
The Great Red Spot (GRS) is a persistent anticyclonic storm, 22° south of Jupiter's equator; observations from Earth establish a minimum storm lifetime of 350 years.[69][70] A storm was described as a "permanent spot" by Gian Domenico Cassini after observing the feature in July 1665 with his instrument-maker Eustachio Divini.[71] According to a report by Giovanni Battista Riccioli in 1635, Leander Bandtius, who Riccioli identified as the Abbot of Dunisburgh who possessed an "extraordinary telescope", observed a large spot that he described as "oval, equaling one seventh of Jupiter's diameter at its longest." According to Riccioli, "these features are seldom able to be seen, and then only by a telescope of exceptional quality and magnification."[72] The Great Spot has been nearly continually observed since the 1870s, however.
The GRS rotates counter-clockwise, with a period of about six Earth days[73] or 14 Jovian days. Its dimensions are 24,000–40,000 km east-to-west and 12,000–14,000 km north-to-south. The spot is large enough to contain two or three planets the size of Earth. At the start of 2004, the Great Red Spot had approximately half the longitudinal extent it had a century ago, when it was 40,000 km in diameter. At the present rate of reduction, it could potentially become circular by 2040, although this is unlikely because of the distortion effect of the neighboring jet streams.[74] It is not known how long the spot will last, or whether the change is a result of normal fluctuations.[75]
An infrared image of GRS (top) and Oval BA (lower left) showing its cool center, taken by the ground based Very Large Telescope. An image made by the Hubble Space Telescope (bottom) is shown for comparison.
According to a study by scientists at the University of California, Berkeley, between 1996 and 2006 the spot lost 15 percent of its diameter along its major axis. Xylar Asay-Davis, who was on the team that conducted the study, noted that the spot is not disappearing because "velocity is a more robust measurement because the clouds associated with the Red Spot are also strongly influenced by numerous other phenomena in the surrounding atmosphere."[76]
originally posted by: 0bserver1
a reply to: SuperFrog
I wonder why that spot stays there all the time . I mean what keeps it the way it is , Gravity?