Newsgroup: it.cultura.fantascienza
Titolo: PROVE TECNICHE DI APOCALISSE


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 In fin dei conti noi siamo contenti che lo Shuttle sia esploso.
Non ho parole. Anzi, una ce l'ho: stronzo.
-- 
Riccardo Campana
riccardo...@flashnet.it
"Chi non conosce la verita' e' uno sciocco, ma chi, conoscendola,
la chiama bugia, e' un delinquente." B. Brecht, Vita di Galileo. 

 Non ho parole. Anzi, una ce l'ho: stronzo.
Secondo me portano anche sfiga!
Simone M. Polo
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 Simone M. Polo
Siamo proprio in Italia, eh? :-(((
Che commenti scientifici!
Achab.

 Che commenti scientifici!
meno male che siamo in italia, invece. 
nei post di AAA la scienza e' un optional..
orsa

 Possiamo considerarla fin da ora una prova tecnica di Apocalisse.> Nel
caso si verificasse un solo minimo errore nella fase di rientro,> infatti,
Cassini si disintegrerà nell'atmosfera, disperdendo nell'aria i> 33 kg di
plutonio 238 contenuti al suo interno.Non c'e' nessuna fase di rientro.
Sentiamo comunque cosa dicel'altra campana.
http://www.jpl.nasa.gov/cassini/rtg/intro2swing.htm
ObserverPS  Un po'
piu' di preparazione ... cari AAA


 33 kg di plutonio 238 contenuti al suo interno.
Non c'e' nessuna fase di rientro. Sentiamo comunque cosa dice l'altra


Associazione Astronauti Autonomi
===============
Ma bevete con l'acqua, va'. Anzi bevete SOLO acqua, che e' meglio...
Cheers
Ervino

"prove tecniche di apocalisse" sono effettivamente in atto (il testo è
ma ditemi una cosa:  ci fate o ci siete ?
se ne leggono già tante di cazzate su questo news.
A che serve aggiungerne di altre ?

The Cassini Mission Inadvertent Swingby Reentry Accident Risk
The Cassini mission has been designed to ensure that the chance of an
inadvertent reentry during Earth swingby is less than one in one million.
NASA has conducted an in-depth analysis, which incorporated human error and
historical spacecraft reliability data, and has determined that the
probability of an inadvertent Earth reentry is less than one in one million.
In the extremely unlikely event that a Cassini inadvertent Earth reentry has
occurred, some plutonium dioxide could be released into the atmosphere. The
fine particles of plutonium dioxide that are potentially hazardous to people
would remain high in the atmosphere for a long period of time. This would
result in the particles being spread very thinly across the world and
eventually making their way to the surface, mostly the oceans. Since the
material is highly insoluble, once it reaches the surface most of it would
become trapped in the oceans or soils and not pose a health hazard. Thus,
most of the released material would not be breathed in by people. The small
amount of released material that would be breathed in would be distributed
over much of the world. Since the amount to be breathed in is so tiny, the
radiation dose that a person would be expected to receive is less than one
millirem total over 50 years. This small radiation dose is indistinguishable
when compared to the 15,000 millirem dose an average person will receive
(over that same 50 year period) from natural background radiation.
Using the conservative approach to estimating consequences from low level
radiation exposures, it has been estimated that this type of accident could
result in about 120 cancer fatalities worldwide over 50 years. However, it
is quite possible that such a low radiation dose (less than one millirem
over 50 years) may not be capable of causing cancer in a person.
Regardless of the assumptions, the risk from an inadvertent Earth reentry is
low. The risk factor, assuming there would be fatalities, would be one in
one million (0.000001, the probability of inadvertent Earth reentry) times
120 (fatalities), and thus equal about 0.0001. This risk factor is much
smaller, at least 200,000 times smaller, than any risks discussed above from
asteroid impacts.


Grazie, Orsa, per l'apologia. Non vedo come si possa rispondere
scientificamente a queste aberrazioni del pensiero umano... molto meglio una
distaccata e sprezzante ironia...
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