Cassini: The Grand Finale

Cassini: The Grand FinaleCassini: The Grand Finale

Cassini: The Grand Finale

After 13 years in orbit around Saturn, the international Cassini-Huygens begins its final chapter, from a series of bold diving between the planet and its rings, and ultimately leads to a dramatic fall in Saturn’s atmosphere September 15, 2017.

The spacecraft maneuver put in its “final” trajectory means a series of receptacles 22 each of a week, approaching Saturn and passing between the inner ring of the planet and its outer atmosphere. With its repeated dives in this unseen region, the mission will conclude the course of exploration unparalleled data collection to address fundamental questions about the origins of Saturn and its ring system. Launched in 1997, the spacecraft began a seven-year journey across the solar system, eventually reaching Saturn in July 2004. A few months later, Cassini orbiter released the Huygens probe, which landed on the SEC Titan in January 2005, the first landing of the outer solar system.

Entangled in a refined atmosphere nitrogendomination partially covered by lakes and rivers, and meteorological Titan hydrological cycle that has interesting similarities to the planet Earth. However, it is important
Differences; The key component is not water, just like our planet, but methane, and the temperature is very low at -180 ° C at the surface. Other advances Cassini was detecting a huge pole of water vapor and organic material was sprayed into space hot fractures near the south pole of Enceladus’ icy moon of Saturn.

These salt-rich jets indicate that an underground ocean of liquid water is only a few kilometers below the
Ice surface of the moon. Recent analysis of data collected during flights Enceladus suggests that hydrothermal activity could provide a source of chemical energy for life, allowing non-photosynthetic biological processes similar to those found near hydrothermal vents in the ocean floor land .

After more than a decade of groundbreaking discoveries, Cassini is now drawing to a close. With little fuel to correct its trajectory, it was decided to end its mission by running a bath in the upper atmosphere of Saturn on September 15 in the process of Cassini will burn, meeting the requirements of planetary protection to avoid The possible contamination of Saturn from moons could have conditions conducive to life.

The “grand finale” is not only a spectacular way to complete this incredible mission, but it will also return a unique scientific data of generosity that has not been collected in the earlier phases of the mission. A life of almost 20 years in space, more than 3 billion kilometers, a lot of scientific data collected will be completed as Cassini probably the most successful spacecraft finally finished in exactly 60 seconds as it enters the upper atmosphere of Saturn to A speed of 123 606 Kph and is vaporized in a ball of fire time.

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