"With Hubble's high resolution we can say that the GRS is definitively squeezing in and out at the same time as it moves faster and slower. That was very unexpected," Amy Simon, project leader and senior scientist at NASA's Goddard Space Flight Center, said in Wednesday's statement.
Jupiter's Great Red Spot is a high-pressure, rotating vortex that has stood the test of time. The cloud tops of this storm have been seen from Earth for more than 150 years.
It's similar to a sandwich where the slices of bread are forced to bulge out when there's too much filling in the middle," Mike Wong, co-investigator and planetary scientist at the University of California, Berkeley commented in Wednesday's announcement.
In the past 20 years, the Great Red Spot has decreased by quite a lot in horizontal size, the team wrote in a paper where they discuss their research.
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