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The Great Red Spot is so great that it was once noticed from the Earth.
NASA website published pictures of the Great Red Spot (Great Red Spot) of Jupiter. They were made on April 1, 2018 from the board of Juno, the American automatic interplanetary station (NASA’s Juno spacecraft), through the JunoCam camera.
High quality pictures. Although the “Juno” photographed from a great height, being 25 thousand kilometers from the upper edge of the clouds of the giant planet, then 50 thousand kilometers. The photo session took place during the next – 12th rapprochement with Jupiter.
Picture from the side "Juno": a vortex of a spot and itself consists of vortices.
Once upon a time, astronomers considered the Great Red Spot solid – a kind of giant mountain towering above the clouds. But then we realized that it was a hurricane – an atmospheric whirlwind – of unprecedented size and strength. Raging in the same place, at least, more than 350 years – since the first time caught the eye of astronomer Giovanni Cassini in 1665.
The vortex funnel spins at a speed of about 500 kilometers per hour. And for some – until the end of not clarified reasons – is decreasing. In the century before last, the Great Red Spot was with two Earths, now it would fit one – true, with a large gap.
Photographs of the spots made in different years indicate that it is actually decreasing.
So the Earth would look on the background of the Great Red Spot
Scientists have determined: the transformation process continues – every year the spot becomes smaller by 230 kilometers. For 20 years it can disappear completely.
– The nature of the movement of atmospheric currents changes, the speed of which reaches almost 700 kilometers, explains Dr Amy Simon, an NASA expert and specialist in extraterrestrial atmospheresexpert in planetary atmospheres at Nasa’s Goddard Space Flight Center). – These changes affect the spot, which is a dynamic formation.
Simply put, the winds on Jupiter blew in some other way, from which the Great Red Spot, existing due to their interaction, began to dissipate.
“Juno” is not in the first turns over the Great Red Spot. Last time I was here in July 2017, I took measurements with the microwave radiometer MWR (Microwave Radiometer) on board. They confirmed: the spot, and indeed the cyclopean one, stretched out in the atmosphere of Jupiter for at least 16,000 kilometers. As Scott Bolton, chief expert of the Juno mission from the South-Western Research Institute in San Antonio (Juno’s principal investigator from the Southwest Research Institute in San Antonio), in the solar system, the main hurricane is not.
And another measurement showed: the funnel of the Great Red Spot goes into the interior of Jupiter at least 300 kilometers. At the same time, its temperature rises. The difference between the top and bottom of the spot reaches several hundred degrees.
Layers of the Great Red Spot.
Recently, NASA showed what is happening over the north pole of Jupiter. Nightmare. You can see here.