The data gathered from NASA's Cassini spacecraft when he made a close flight to Saturn in the last days of his mission revealed new details of the nearby mini ravioli on the planet
The five small moons that are close to the Rings of Saturn has strange surfaces, covered with material from Saturn's emblematic rings, and glacial particles ejected from Saturn Enceladus's big moon, according to NASA. They also have an unusual shape and are not spherical, like ravioli, with material stuck around equators
. "The dense body will have a bigger ball, as gravity will pull the material."
The new study, described in an article published in Science is based on data collected by six of Cassini tools before its mission ends in 2017
We know of Saturn from ancient times , of course, but we only know of the inner moons – known as Pan, Daphne, Atlas, Pandora and Epimetheus – quite recently, Pan, for example, was discovered in 1985, while Daphne dates back only from 2005
the satellites surveyed, the surfaces of the ones nearest to Saturn – Daphne and Pan – are the most changed from the materials of the ring. 19659009] Mounting views of NASA's Cassini spacecraft shows three of the small circular moons inspected during close flights: Atlas, Daphne and Pan. The key part of the puzzle was a data set from the Cassini Visible and Infrared Mapping Spectrometer (VIMS), which collects light visible to the human eye, also infrared light longer wavelengths. For the first time, Cassini was close enough to create a spectral map on the surface of the innermost Pan. By analyzing the spectra, VIMS has been able to learn about the composition of the five moons.
VIMS saw that the closest to Saturn rings were the most red, similar to the color of the main rings. Scientists still do not know the exact composition of the material that looks red, but believe it is a mixture of organic and iron.
The moons that lie outside the main rings, on the other hand, look brighter, like the light of Enceladus' ice fins.
Flying rings of the moons, carried out between December 2016 and April 2017, covered all Cassini's optical distraction tools that study the electromagnetic spectrum. They work together with the tools that explore dust, plasma, and magnetic fields, and how these elements interact with the moons. Scientists are not yet sure what caused the formation of the moons but they will use the new data to model scenarios, and you can also apply the insights to the small moons around other planets and possibly even to asteroids. similar to those of the moons of Saturn? Burroughs asked. "These are issues that must be met by future missions."
Cassini's mission was completed in September 2017 when the fuel was low. The spacecraft was deliberately sunk in the control of the missions in Saturn's atmosphere to avoid the risk of collapsing the moons of the planet. NASA is expected to reveal more science from Cassini's recent orbits, known as the Big Finale, over the next few months.
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