Eres wrote:Unfortunately the test for the composition of the polar plumes of Enceladus is failed. Something has gone wrong really to the passage of the Cassini though the Enceladus plumes at south pole. Next date for Cassini flyby on Enceladus south pole is for August.
http://space.newscientist.com/article/d ... flyby.html
...Another instrument, the Composite Infrared Spectrometer (CIRS), got a close-up look at the tiger stripes, although some analysis is still needed before any images are released. "We're looking for any kind of changes from the last flyby in 2005," says Neil Bowles of Oxford University, UK, a member of the CIRS team.
On that flyby, CIRS found hotspots coinciding with the tiger stripes. The source of this heat is still unknown.
If the heat source is powerful enough to melt a watery sea or ocean under Enceladus's ice crust, then electrical currents in that sea could affect magnetic fields near the moon.
During the 12 March flyby, Cassini's magnetometer found that the field of Saturn is bent around the plume...
FS3 wrote:Checked it up a bit now. Basically the CDA is a mass spectrometer working with a pulsed laser measuring the thickness of abresion by the incoming particles on a collector plate. If - still holding the benefit of doubt - if those particles are too large or their acceleration is much, much more higher (due to extreme, not before expected currents) than previousely calculated - there will be simply no results showing up.
Perhaps our own team of Sherlock Holmes could find out WHY AT ALL "a new software, designed to improve the ability of CDA to count particle hits" had to be designed - in addition to the original mission.FS3
Abstract The Cassini-Huygens Cosmic Dust Analyzer (CDA) is intended to provide direct observations of dust grains with masses between 10^−19 and 10^−9 kg in interplanetary space and in the jovian and saturnian systems, to investigate their physical, chemical and dynamical properties as functions of the distances to the Sun, to Jupiter and to Saturn and its satellites and rings, to study their interaction with the saturnian rings, satellites and magnetosphere. Chemical composition of interplanetary meteoroids will be compared with asteroidal and cometary dust, as well as with Saturn dust, ejecta from rings and satellites. Ring and satellites phenomena which might be effects of meteoroid impacts will be compared with the interplanetary dust environment. Electrical charges of particulate matter in the magnetosphere and its consequences will be studied, e.g. the effects of the ambient plasma and the magnetic field on the trajectories of dust particles as well as fragmentation of particles due to electrostatic disruption.
The investigation will be performed with an instrument that measures the mass, composition, electric charge, speed, and flight direction of individual dust particles. It is a highly reliable and versatile instrument with a mass sensitivity 10^6 times higher than that of the Pioneer 10 and 11 dust detectors which measured dust in the saturnian system. The Cosmic Dust Analyzer has significant inheritance from former space instrumentation developed for the VEGA, Giotto, Galileo, and Ulysses missions. It will reliably measure impacts from as low as 1 impact per month up to 10^4 impacts per second. The instrument weighs 17 kg and consumes 12 W, the integrated time-of-flight mass spectrometer has a mass resolution of up to 50. The nominal data transmission rate is 524 bits/s and varies between 50 and 4192 bps.
A completely unexpected surprise is that the chemistry of Enceladus, what's coming out from inside, resembles that of a comet," said Hunter Waite, principal investigator for the Cassini Ion and Neutral Mass Spectrometer at the Southwest Research Institute in San Antonio. "To have primordial material coming out from inside a Saturn moon raises many questions on the formation of the Saturn system.
existentist wrote:A completely unexpected surprise is that the chemistry of Enceladus, what's coming out from inside, resembles that of a comet," said Hunter Waite, principal investigator for the Cassini Ion and Neutral Mass Spectrometer at the Southwest Research Institute in San Antonio. "To have primordial material coming out from inside a Saturn moon raises many questions on the formation of the Saturn system.
From http://www.sciencedaily.com/releases/20 ... 151729.htm
I'm amazed that they don't at least acknowledge the EU theory when they say things like this.
"A completely unexpected surprise is that the chemistry of Enceladus, what's coming out from inside, resembles that of a comet," said Hunter Waite, principal investigator for the Cassini Ion and Neutral Mass Spectrometer at the Southwest Research Institute in San Antonio. "To have primordial material coming out from inside a Saturn moon raises many questions on the formation of the Saturn system."
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