One of the biggest questions Saturn is solved thanks to his rings, Knowing that they did not form up to the planet, the data collected by the probe Cassini help to know how long will be a day in the gas giant, according to a study published in the Astrophysical Journal.
Scientists had only approximate values for Duration of the Day of Saturn For information received by Voyager mission in 1981, it is believed that the planet is spinning on its own axis in 10:39:23– an assessment based, inter alia, on the magnetic field.
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Over the years, this figure has changed within the 10:36 and 10:48, but it was still not an exact figure.
Then, before it crashes on the surface Saturn, Cassini sent data that accurately determines the length of the day in this distant world: 10 hours, 33 minutes and 38 seconds.
but, Why was it so hard to measure the length of the day? then the surface of Saturn is not rigid, therefore, it is not possible to follow a reference point along a turn, and the axis of rotation is almost equal to its magnetic fieldtherefore, radio signals can not be used to know how long the complete rotation has been delayed.
then, Christopher Mankovich, astronomer and astrophysicist from the University of California he uses data from Cassini to study the wave patterns within rings and the magnetic field of Saturn to get the exact figure, details of the study.
For its part ,. T NASA Talk about this: "Researchers use waves in. T rings to look at the interior of Saturn, and they took out this fundamental feature on the planet. This is really a solid result ", said Linda Spicker, head of the Cassini project, in a statement by the US agency.
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