Cassini: An Endless Legacy
Cassini: An Endless Legacy
.Cassini: An Endless Legacy
New discoveries from the trips between the rings and the planet.
During the last months of its existence, Cassini, free from security concerns, he launched into his most ambitious and dangerous mission, traveling between the seemingly free space that stretched between them. It was not sure that he survived, since not only was it known with certainty if it was a place devoid of matter, or on the contrary he would find a wall that would lead to its destruction. Therefore, the first step was made with the main antenna in front, as a shield, seeking protection against the unexpected. Never would have tried to not live the probe his last days, but at this point was already looking for the icing on the cake.
And it was a spectacular success, following the line of triumph of Cassini. Fantastic images and above all scientific data were collected in huge quantities, which since then have been studied in depth. And now all that work is beginning to pay off. And certainly many things change about what we know and what we thought we knew. Let's see the 7 great achievements now presented .:
1) Complex organic compounds embedded in nanogotas were detected by water falling from the rings of Saturn to its superior atmosphere. Scientists saw water and silicates, but were surprised to find methane, ammonia, carbon monoxide, nitrogen and carbon dioxide. Its composition is different from that found on the moon Enceladus, and also those of Titan, which means that there are at least three different reserves of organic molecules in Saturn's system.
2) For the first time Cassini saw closely how the rings interact with the planet and observed particles and gases of these first that fall directly into the atmosphere. Some particles acquire electrical charge and spiral along the lines of the magnetic field, projecting to higher latitudes. But scientists were surprised to see that others are quickly drawn towards the equator. And everything faster than expected: 10,000 kilograms of material per second.
3) Scientists were surprised to see that the material in the gap between the rings and the atmosphere are mostly very small, nanometer-sized particles, like smoke, suggesting that some unknown process is crushing them.
4) Saturn and their rings were even more interconnected than previously thought. Cassini revealed a previously unknown system of electric currents that serves as a bridge between them.
5) He also detected a new radiation belt around Saturn, near the planet and composed of energetic particles. They discovered that while the belt actually intersects with the innermost ring, it is so thin that it does not impede its formation.
6) Unlike any other planet with a magnetic field in our Solar System, the Saturn it is almost aligned with its axis of rotation. The new data shows an inclination of less than 0.0095 degrees. (The one in the Earth, in comparison, it is inclined 11 degrees). According to everything scientists know about how planetary magnetic fields are generated, Saturn I should not have any. A mystery to solve.
7) Cassini It flew over the magnetic poles, directly sampling the regions where radio emissions are generated. The findings more than doubled the number of direct measurements of the planet's radio sources, one of the few non-terrestrial locations where scientists have been able to study a radio generation mechanism that is believed to operate throughout the universe.
"Almost everything that happened in that region turned out to be a surprise"Explains Linda Spilker."That was the importance of going there, exploring a place where we had never been before. And the expedition was really worth it: The data is tremendously exciting" A year after disappearing forever in the hazy atmosphere of the planet, Cassini continues to marvel. And with each new finding, each new jewel brought to light, the more we miss it.
Recent Cassini findings in one image: Complex organic compounds falling from the rings, inner ring particles acquire electrical charges and travel along magnetic field lines, system of electric currents and radiation belt revealed, and an inclination of the magnetic field of almost zero.
The last 22 orbits of Cassini took us into unknown territory. The results just now begin, and promise to revolutionize everything known about Saturn.
Groundbreaking Science Emerges from Ultra-Close Orbits of Saturn
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