Jupiter

5 May 2017

At www.newscientist.com/article/2129805-first-results-from-jupiter-probe-sh... ... Gary sent in this link to the New Scientist website - Jupiter probe shows huge magnetism and storms. Big planets come with big surprises, the author of the piece begins - and yes, surprises seem to be in store. The annual meeting of the European Geosciences Union was treated to the first release of data from the Juno spacecraft, now in orbit around Jupiter. It's a game changer. There is a dense zone of ammonia gas around its equator and lots of ammonia clouds elsewhere. It is being suggested that ammonia dominates the atmosphere of Jupiter.

It was assumed Jupiter had a shallow crust of liquid hydrogen overlying a thin layer where helium rains down. Under that a deeper layer of metallic hydrogen with a small core 70,000 km deep. These assumptions were based on modeling and mapping the gravity of Jupiter. Another surprise is that Jupiter's magnetic field is much strong than envisaged.

Meanwhile, at https://phys.org/print412926292.html ..Cassini and the narrow gap between Saturn and its rings - known as the big empty to NASA spokesmen ...

    .... while at https://phys.org/print412950149.html ... the Chandra X-ray Observatory has found an enormous wave rolling through a huge mass of hot gas in the Perseus galaxy ...