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Author Topic: Cassini spacecraft being terminated because getting too close to the truth?  (Read 2843 times)

Offline easynow

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Hey there everyone :) Hoping all are staying safe during the hurricane and I decided to post this for anyone who wants to take a break from looking at politics or coverage of the storm.



Apparently NASA has decided to end the Cassini mission on Sept. 15th by crashing the spacecraft into Saturns atmosphere ...

Quote
Published on Sep 8, 2017

The Cassini mission’s epic 13-year exploration of Saturn is coming to a close. On Sept. 15, the spacecraft will make a planned plunge into the atmosphere of Saturn in order to protect pristine icy moons that warrant future exploration. As the mission nears its end, team members reflect on this historic, international collaboration. The video uses a combination of animation and actual imagery returned over the course of the mission. For more information about the Cassini mission, visit https://saturn.jpl.nasa.gov. For specific information about the mission's Grand Finale, visit https://saturn.jpl.nasa.gov/mission/gov.

Link - ht tps://www.youtube.com/watch?v=gPdgsPTNhac





The Grand Finale
Link - https://saturn.jpl.nasa.gov/mission/grand-finale/overview/

Google Search
Link - https://www.google.com/search?q=cassini+grand+finale




Does that even make sense?... destroying the spacecraft when there were other alternatives ?


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Why dispose of the spacecraft in Saturn’s atmosphere instead of other possible ends for the mission (for example, send Cassini somewhere else in the solar system, attempt a landing on one of the moons, crash into the rings and watch the impact with telescopes)?

Quote
Concepts were evaluated for parking Cassini in an orbit around Saturn that would have been stable for a long time, along with a variety of other mission scenarios. However, the Grand Finale of close dives past the outer and inner edges of the rings, and ultra-close brushes with the planet and its small, inner moons, offered such enormous scientific value that this scenario was chosen for the mission’s conclusion.

Link - https://saturn.jpl.nasa.gov/faq/#end_of_mission



Was wondering what other people might think about the mission ending this way because I can't help but wonder if there's more to it?

Is it possible the amount of new scientific evidence discovered might be getting the general public to close to the truth or perhaps finding Alien life?



Afterall there can be no doubt, the Cassini mission has produced many new and amazing discoveries ...
Everything from Geyser plumes of ice jetting deep into space...



PIA21887: Last Enceladus Plume Observation
Link - https://photojournal.jpl.nasa.gov/catalog/PIA21887


To UFO shaped objects ...

Cassini Reveals Strange Shape of Saturn's Moon Pan
Link - https://www.nasa.gov/image-feature/jpl/cassini-reveals-strange-shape-of-saturns-moon-pan
Link - https://saturn.jpl.nasa.gov/galleries/raw-images?order=earth_date+desc&per_page=50&page=0&targets%5B%5D=PAN
Search - https://www.google.com/search?biw=1152&bih=651&q=Saturn's+moon+Pan


To Earth-like looking planets ...



PIA20016: Peering Through Titan's Haze
Link - https://photojournal.jpl.nasa.gov/catalog/PIA20016


Quote
Titan is the largest moon of Saturn. It is the only moon known to have a dense atmosphere, and the only object in space other than Earth where clear evidence of stable bodies of surface liquid has been found.

Link - https://en.wikipedia.org/wiki/Titan_(moon)






And many many more discoveries, infact there's been so many it's too much to even list.

So does it make sense to terminate the spacecraft? when Cassini could have been placed in an orbit around Saturn that would have been stable for a long time and made many other observations?


When perhaps there's much more out there to see ?


The Spaceships of Saturn
Link - http://www.thelivingmoon.com/46_mike_singh/03files/Ships_Saturn.html

Thoughts anyone ? :)
« Last Edit: September 10, 2017, 05:24:26 pm by easynow »

Offline ArMaP

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I don't think there's any thing more to it, as sending Cassini into Saturn is a great opportunity to get data that only a new mission could get.

PS: nice to "see" you. ;)

Offline easynow

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Hey ArMaP thanks for the reply and good to see you too !


Which is better ?


Destroying the spacecraft just to get a small atmospheric sample ?

Or

Years of continued observations from that part of the solar system ?



I believe the latter is a more logical choice  ;D




Oh and there's also this whopper ...

Quote
A paper titled "The Lucifer Project" has recently emerged which claims that NASA is very likely to deliberately direct the Cassini space probe into Saturn's dense atmosphere where it will destruct. This is to take place soon after the termination of Cassini's four year monitoring mission in June 2008 when Cassini is in a polar orbit of Saturn.

 

The paper's author contends this will be a secret effort to use the Cassini's plutonium fuel rods as a fission device to generate a runaway nuclear fusion process on Saturn that would trigger the emergence of a new sun. The new sun would enable the moons of Saturn to be heated possibly making them suitable for colonization and other uses by humanity. On the other hand, the creation of a new sun would generate a shock wave of hydrogen and other particles that could have devastating effects on Earth.

Link - https://www.bibliotecapleyades.net/exopolitica/esp_exopolitics_ZZZZN.htm
Link - https://www.bibliotecapleyades.net/ciencia/ciencia_luciferproject09.htm

Search link - https://www.google.com/search?q=cassini+lucifer+project

Offline ArMaP

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Which is better ?


Destroying the spacecraft just to get a small atmospheric sample ?

Or

Years of continued observations from that part of the solar system ?
First of all, the idea of destroying the spacecraft at the end has always been part of the mission, and they wouldn't get much more data by leaving it on a stable orbit, as that would be the same kind of orbit the probe has been before, but without the possibility of manoeuvring.

Quote
Oh and there's also this whopper ...
That "whopper" is based on a wrong assumption, that Cassini has a nuclear reactor, while what it has is a isotope based thermoelectric generator that creates electricity from the heat of the radioactive material inside it.

Offline astr0144

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Thanks for informing us on this "Easynow"..

I was not aware of it...

No doubt it will be Sad to see it disappear...

Im not sure what to conclude or favor...

but if they believe it has completed its mission and unlikely to add any more real worthwhile updates....

then like they have crashed one of their other probes into Titan..which was intended..

it seems as ArMaP suggests that this was also intended.

but you would think , that they could have still made use of continuing with it as well..

So I dont see any easy answer in terms of siding on one side or the other options..


Quote
Hey there everyone :) Hoping all are staying safe during the hurricane and I decided to post this for anyone who wants to take a break from looking at politics or coverage of the storm.

Apparently NASA has decided to end the Cassini mission on Sept. 15th by crashing the spacecraft into Saturns atmosphere ...
« Last Edit: September 10, 2017, 06:44:50 pm by astr0144 »

Offline easynow

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First of all, the idea of destroying the spacecraft at the end has always been part of the mission, and they wouldn't get much more data by leaving it on a stable orbit, as that would be the same kind of orbit the probe has been before, but without the possibility of manoeuvring.

"wouldn't get much more data by leaving it on a stable orbit"

Ok, if you say so   :D



"but without the possibility of manoeuvring"

Really ArMaP, with all due respect, ... this is incorrect.

If they hadn't done all the recent manuevers, there would be plenty of power remaining   




Quote
That "whopper" is based on a wrong assumption, that Cassini has a nuclear reactor, while what it has is a isotope based thermoelectric generator that creates electricity from the heat of the radioactive material inside it.

Not wrong, ... perhaps just described incorrectly.



Quote
The isotope plutonium-238 is not fissile but can undergo nuclear fission easily with fast neutrons as well as alpha decay.

Link - https://en.wikipedia.org/wiki/Plutonium


Radioisotope Thermoelectric Generators: RTG Energy for Space Exploration



« Last Edit: September 10, 2017, 07:12:43 pm by easynow »

Offline ArMaP

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"wouldn't get much more data by leaving it on a stable orbit"
Ok, if you say so   :D
I don't see how, after 13 years or orbiting Saturn with the possibility of manoeuvring they can get data they didn't get on a stable orbit, unless by chance.

Quote
"but without the possibility of manoeuvring"

Really ArMaP, with all due respect, ... this is incorrect.

If they hadn't done all the recent manuevers, there would be plenty of power remaining   
The original mission ended in 2010 and was extended until it had used all the fuel, with the idea of throwing it into Saturn. These last manoeuvres were nothing special, so I don't think they used much fuel. Do you have any reference to how much fuel they spent on these last manoeuvres?

Quote
Not wrong, ... perhaps just described incorrectly.
That's why I prefer to read the originals instead of descriptions like that, talking about "fuel rods". :)

Offline Irene

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I don't see how, after 13 years or orbiting Saturn with the possibility of manoeuvring they can get data they didn't get on a stable orbit, unless by chance.
The original mission ended in 2010 and was extended until it had used all the fuel, with the idea of throwing it into Saturn. These last manoeuvres were nothing special, so I don't think they used much fuel. Do you have any reference to how much fuel they spent on these last manoeuvres?
That's why I prefer to read the originals instead of descriptions like that, talking about "fuel rods". :)

I'd like a closer look at Titan. They've spotted blue oceans/seas of some kind under the haze (Greenhouse Effect?).
Shipwrecked by the laughter of the gods.....

Offline ArMaP

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I'd like a closer look at Titan. They've spotted blue oceans/seas of some kind under the haze (Greenhouse Effect?).
I don't know much about orbit mechanics, but I think that a "stable orbit" would need to be far from any satellites, so it would not be disturbed. Also, the farther away from a planet the more stable the orbit, as any small changes do not result in strong enough changes in the forces at work.

Offline Shasta56

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I saw something about this in this morning's paper.  I thought,  "How does Saturn feel about that?"
Daughter of Sekhmet

 


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