Friday, August 1, 2014

Internal dynamics od Jupiter disturbed

While it was 23 336 km wide in 1979, the passage of the Voyager probes, or 20,953 kilometers in 1995, according to a previous snapshot of Hubble, the vortex would now more than 16,495 kilometers wide . Its shape is also affected: once oval, the Great Red Spot of the gas giant is now almost circular. According to data collected by John Rogers, who coordinates amateur observations of Jupiter for the British Astronomical Association, since 2012, the giant anticyclone has lost an average of 933 km per year. Suffice to say that at this rate, it might have disappeared in less than twenty years.

Internal dynamics disturbed ...

But then, that happens he? For now, scientists are mostly cautious because the phenomena that affect the atmosphere of Jupiter are still poorly known. However, the specialist of NASA Amy Simon-Miller of the Goddard Space Flight Center, has his own ideas on the matter. His hypothesis is that the rapid shrinkage of the Great Red Spot may be related to training in it, little whirlpools spotted by NASA in recent years. According to her, these formations could undermine the internal dynamics of the anticyclone and shrink to a trickle. The Juno probe, which must reach Jupiter in July 2016, maybe to confirm permit.

WATCH this video that shows the Great Red Spot today, in 2009 and 1995: