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technical accomplishments

 
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PostPosted: 21-05-2018 03:27:50    Post subject: technical accomplishments Reply with quote

LOS ANGELES Puma Ignite Evoknit High Biele Lacne , Sept. 16 (Xinhua) -- After 20 years in space, the U.S. National Aeronautics and Space Administration (NASA)'s Cassini spacecraft was running out of fuel.


To protect moons of Saturn that could have conditions suitable for life, the long-lived traveler from Earth made a fateful plunge into the atmosphere of Saturn Friday morning, ending its 13-year tour of the ringed planet.


It's hard to say goodbye, not only for the entire Cassini team, but everyone who looks up at Saturn in the night sky. So, why Cassini matters?


VASTLY EXPANDED OUR KNOWLEDGE


Launched in 1997 Puma Ignite Limitless Cierne Sede Predaj , the 3.26-billion-U.S.-dollar Cassini-Huygens mission has been touring the Saturn system since arriving at the sixth planet from our sun in 2004. The Huygens lander separated from Cassini and plopped down on the surface of Saturn's moon Titan shortly after the arrival.


The Cassini probe had been planned to study the Saturn system until 2008, but the mission was given two extensions that stretched its lifetime into 2017.


During its journey, Cassini has made numerous dramatic discoveries. From Cassini, our knowledge of gas giants, ring systems and icy moons has vastly expanded.


Most excitingly, in revealing that Saturn's moon Enceladus has many of the ingredients needed for life, the mission has inspired a pivot to the exploration of "ocean worlds" that has been sweeping planetary science over the past decade Puma Ignite Evoknit Low Cierne Cervene Najlacnejsie , experts say.


According to NASA, the more recent revelation that a much smaller moon like Enceladus could also have not only liquid water, but also chemical energy that could potentially power biology, was staggering.


Cassini also performed 127 close flybys of Saturn's haze-enshrouded moon Titan, another of Saturn's moons with some of the most Earth-like features discovered in our solar system that may now be a candidate for future exploration.


By pulling back the veil on Titan, Cassini has ushered in a new era of extraterrestrial oceanography.


The information Cassini gathered has enabled scientists to make discoveries that have warranted the publication of nearly 4,000 scientific papers Puma Match 74 Citi Series Leather Biele Cierne Najlacnejsie , according media reports.


"Cassini has transformed our thinking in so many ways, but especially with regard to surprising places in the solar system where life could potentially gain a foothold," said Thomas Zurbuchen, associate administrator for NASA's Science Mission Directorate at Headquarters in Washington. "Congratulations to the entire Cassini team!"


REMARKABLE STORY OF EXPLORATION


Cassini's plunge brings to a close a series of 22 weekly "Grand Finale" dives between Saturn and its rings, a feat never attempted before by any spacecraft.


No other mission has ever explored this unique region. What scientists learn from these final orbits will help to improve our understanding of how giant planets, and planetary systems everywhere, form and evolve.


"It was exactly those data that led me into science Fenty Puma Rihanna Leather Creepers Biele Modre Vypredaj , growing from a young student to an established researcher," planetary scientist Cui Jun, who started to work on the Cassini data as early as 2006, told Xinhua.


Between April and September 2017, Cassini has undertaken a daring set of orbits that is, in many ways, like a whole new mission.


On its final orbit Vypredaj Damske Fenty Puma Rihanna Leather Creepers Ruzove , the probe has even made groundbreaking scientific observations of Saturn. Before contact was lost, eight of Cassini's 12 scientific instruments were operating.


In particular, the spacecraft's Ion and Neutral Mass Spectrometer (INMS) was directly sampling the atmosphere's composition, which cannot be done from orbit.


As planned, data from eight of Cassini's science instruments were beamed back to Earth, according to NASA. Mission scientists will examine the spacecraft's final observations in the coming weeks for new insights about Saturn, including hints about the planet's formation and evolution Damske Fenty Puma Rihanna Leather Creepers Ruzove Predaj , and processes occurring in its atmosphere.


As predicted, traveling at approximately 120,000 km per hour, Cassini began its entry into Saturn's atmosphere at an altitude of about 1,915 km above the planet's estimated cloud tops at 3:31 a.m. PDT (1031 GMT) on Friday, with a confirming signal received on Earth at 4:55 a.m. PDT (7:55 a.m. EDT).


During its final journey, Cassini was sending back new and unique science to the very end. Due to the travel time for radio signals from Saturn Fenty Puma Rihanna Velvet Creepers Cement Najlacnejsie , which changes as both Earth and the ringed planet travel around the Sun, events have taken place there 83 minutes before they are observed on Earth.


The spacecraft's final signal was like an echo. It has radiated across our solar system for nearly an hour and a half after Cassini itself has gone.


"Cassini was the most significant outer solar system space mission since the Voyager spacecraft of the 1980s. It will be at least a decade until we have another similar spacecraft, if serious work is started now," planetary scientist Seth Jacobson said in a statement.


POWERFUL INFLUENCE ON FUTURE EXPLORATION


"For me, September 15 is not the end of the mission. My students and myself have at least five papers done with the Cassini data, to be submitted later this year. I believe this will continue for the following decades because the Cassini-based science will never die," Cui told Xinhua.


As the Cassini spacecraft ends its long journey rich with scientific and technical accomplishments Fenty Puma Rihanna Velvet Creepers Burgundy Lacne , it is already having a powerful influence on future exploration.


Results from Cassini poured in for over a dozen years during the life of the mission and will continue for decades.


Many lessons learned during Cassini's mission are being applied to planning NASA's Europa Clipper mission, planned for launch in the 2020s, according to the U.S. space agency.


In a recently completed study, a variety of potential mission concepts are discussed, delivered to NASA in preparation for the next Decadal S



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