Cassini's 13 Years Exploring Saturn Just Came To An End

Just for the likes? Nasa is keen to humanise its space missions- but why?
The Telegraph

Just for the likes? Nasa is keen to humanise its space missions- but why? Credit The Telegraph

Scientists will now pour over the data sent back in Cassini's final hours, looking for more details about the huge planet's composition and evolution.

"You work on something for 25 years, that's pretty much close to a career". Among them is Prof. At one point in the broadcast, NASA played a video clip of the Cassini Virtual Singers, spacecraft team members who belted out, "Tonight, tonight, we take the plunge tonight ..." to the music from "West Side Story". "Snapshots are not enough".

And the potential for extraterrestrial life in Saturn's neighborhood is exactly why Cassini, a $4 billion spacecraft, had to come to be destroyed. The spacecraft traveled 4.9 billion miles (7.9 billion kilometers) during its mission, circled Saturn 293 times, discovered six moons and observed dozens more.

And yet, two memories make Cassini shine bright. A few distant, early photographs also showed diffuse features extending to the sky from the southern hemisphere. Cassini has collected more than 450,000 images using a visible light camera.

Cassini's Huygens probe also dropped beneath Titan's atmosphere and landed on its surface, giving astronomers an excellent view of it's terrain.

Nasa was keen to promote this
Nasa was keen to promote this

Erinn Sherlock, left, Ethan Breeding and Jack Breeding applaud the end of the mission for the Cassini spacecraft at the University of Colorado's Laboratory for Atmospheric and Space Physics on Friday.

During its journey, Cassini has made numerous dramatic discoveries. "It just couldn't have been better", said Maize. AP is the largest and most trusted source of independent news and information.

In a second extension called the Cassini Solstice Mission, the spacecraft made new exciting discoveries.

Just before Cassini was vaporized while falling through the extreme pressure of Saturn's clouds, the bus-sized spacecraft beamed home an image of the spot where it would meet its fate.

"For me, it's a happy day because we got data until yesterday, science data", Jouchoux said.

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That "goodbye kiss" set Cassini on its final, fatal course.

"Cassini has enabled those future missions to be possible", said Jim Green, NASA's director of planetary science.

The probe discovered seasonal changes on Saturn, a hexagon-shaped pattern on the north pole and the moon Titan's resemblance to a primordial Earth. The spectrometer could determine what material is from the rings and what material is part of the atmosphere.

"From my point of view, the most important question is whether or not life exists on Enceladus's subsurface ocean or at least the extent to which conditions for life to evolve exist there".

The decision to kill off Cassini was taken because the craft would soon run out of fuel and become impossible to steer. And Titan not only has seas and lakes of liquid ethane and methane, it has an atmosphere of chemicals that rain down, forming a unique chemistry that could lead to life. "How did its surface evolve to be so earthlike in structure?"

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Three other spacecraft have flown by Saturn - Pioneer 11 in 1979, followed by Voyager 1 and 2 in the 1980s.

"Understanding Neptune's ring system poses new scientific problems". There are no missions in progress to return to the ringed planet.

As for the mission's ending, which Adamkovics watched via live stream, he said, "It's incredible how much of an emotional impact the destruction of a scientific instrument can have".

Over the years, Cassini has revealed insights about Saturn, its rings and how they operate, the complexities of its moons, the history of the solar system and planet formation and even the other places in our solar system where life might exist: ocean worlds. "Cassini and this mission was flawless", he said. The Cassini project spanned decades from inception to grand finale.

In the predawn dimness, hundreds of bleary-eyed scientists gathered to watch the live stream from mission control. "For a scientist, Cassini was a mission to die for", Helfenstein said.

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