PDA

View Full Version : Tatooine = Earth ?



stillakid
01-20-2004, 10:40 PM
Okay, not literally, but given the ideas presented in the article below, it stands to reason that since Earth is on the outskirts of the galaxy, it has something in common with Tatooine.

But consider this: If the older stars in the galaxy exist toward the center of the galaxy, then that means that the younger stars are on the outskirts. Following that reasoning, if life were to form on all planets in a way that was similar to what happened here on Earth, then civilizations could have come and gone from the center of the Milky Way before any living creatures climbed out of the primordial soup.

But Earth isn't the point here. Applying this train of thought to the Star Wars Galaxy, wouldn't it seem likely that life on the Outer Rim would be of a primitive, if not downright microscopic, nature? Granted, the Tusken Raiders aren't the brightest lightbulbs in the box, but Neanderthal they're not.

Thoughts?



Aliens in Our Galaxy? Experts Map Possible Hotbeds

Stefan Lovgren
for National Geographic News
January 6, 2004


Scientists say a ring-shaped region in the disc of the Milky Way shows the highest potential for life in our galaxy.
But don't expect them to find extraterrestrial life anytime soon: In this region, there are some 20 billion star systems that offer the prerequisites of life

The team of astronomers has identified stars that contain enough heavy elements to form terrestrial planets; are sufficiently distant from disastrous supernova explosions; and have existed for at least four billion years—the time it took for complex life to evolve on Earth.

Using a sophisticated computer evolution model, they found that ten percent of the stars in our galaxy, located in a ring around the center of the Milky Way, meet those criteria.

"This is a crude first map of where life could be in our galaxy," said Charles Lineweaver, an astrophysicist at the University of New South Wales in Sydney, Australia, who led the study.

The research also shows that 75 percent of the stars in this habitable zone are older than our sun; so if there is actually life there, it's probably more evolved than life on Earth.

"Metallicity"

Our galaxy, the Milky Way, contains more than 200 billion stars and countless other objects. It is one of billions of other galaxies in the universe.

The Milky Way was formed some 12 billion years ago out of a large cloud of gas, mainly hydrogen and helium, that collapsed on itself and began forming stars. Since the cloud was rotating, its spherical shape flattened into a disc.

As the formation of the new stars continued, the most massive stars exploded and enriched the gas in the cloud with new, heavier elements. The new stars that were created in these disc regions contain the heavier elements required to form terrestrial planets, which may be spinning around them.

In their search for possible life, scientists look for favorable zones of "metallicity." A star with no heavy metals can't form terrestrial planets or life.

"Anytime you can identify regions that have higher concentrations of metallicity, that's where you may find life," said Lineweaver. "In our model of the galaxy, we keep track of where and when these metals were produced. We can do that because we know how many massive stars went 'boom' as a function of time and place."

Planets in regions that are too rich in metals, meanwhile, are vulnerable to so-called Earth-killers, preferentially found in such regions. If a gas-filled, Jupiter-like planet migrates through an area that is too rich in metals, it will kill any "Earths" that are there.

Exloding Supernovae

But the right level of metallicity isn't the only prerequisite for life. The astronomers also had to look for regions that have experienced relative calm for at least four billion years, the time it took for life to evolve on Earth.

"In a high-density stellar environment, you will not have four billion years of clement, let's-sit-back-and-evolve life," said Lineweaver. "For complex life to evolve, you may need about four billion years without too many supernovae going off."

The computer model used for the study is based on local observations. Scientists can look at stars all over the galaxy and determine the metallicity at the time they were formed.

The region the researchers have concluded is the most favorable to host life is a ring that measures 21,000 to 27,000 light-years from the center of the galaxy. Created between four and eight billion years ago, this region is where 10 percent of the stars of the Milky Way were formed.

"We're not saying anything about the probability of extraterrestrial or complex life," said Lineweaver. "But if it does exist, and we're right about our prerequisites for it, this is the distribution it will have. This is where life will be."

Humans vs. Aliens

The astronomers were also able for the first time to determine the age of the stars in the habitable zone. They found that 75 percent of them are older than our sun.

"If people think that intelligent life will happen on these planets, then 75 percent of this intelligent life will have had a longer time to evolve than people or the entities that are circulating around our sun," said Lineweaver.

"We're all trying to figure out how we compare to any life-forms that may exist in the universe," he added. "This study is the closest thing I can think of to answer that question. If there are aliens, 75 percent of them will have had longer time to evolve than we have. That may be the most fundamental take-home message of this study."

The research is published in the January 2 issue of the journal Science.

scruffziller
01-21-2004, 09:09 AM
WOW that is an extremely cool theory!!!!!!!!!!!:)

Bel-Cam Jos
01-21-2004, 06:57 PM
I think that Tatooine = Modesto, CA? might be a better question. Lucas was probably trying to say just how "away from it all" he seems as he was growing up, so a desolate planet could stand in for a place that seems to be going nowhere, furthest from the brightest center, out-of-the-way poor, etc. But I like the idea that the most "distant" areas are possibly the oldest.

I'll get my spaceship and meet you there!

Kidhuman
01-21-2004, 07:09 PM
WOW that is an extremely cool theory!!!!!!!!!!!:)


And a "Theory" it is. ;)

LTBasker
01-22-2004, 02:54 AM
Applying this train of thought to the Star Wars Galaxy, wouldn't it seem likely that life on the Outer Rim would be of a primitive, if not downright microscopic, nature? Granted, the Tusken Raiders aren't the brightest lightbulbs in the box, but Neanderthal they're not.


Ya gotta consider though that alot of Tatooine inhabitants seem to be more of immigrants. I highly doubt Tatooine could sustain life whatsoever, considering they had to invent vaporators in order to get water out of air moisture. Then you gotta figure how old Coruscant is, I doubt those buildings got that tall in a year. So obviously civilization on there seems to be very very very very old. So probably the theory could very much apply to Star Wars, and Tatooine hasn't evolved it's own lifeforms yet possibly...

Even those that aren't immigrants on Tatooine, seem to be born from immigrants, cause when ya think about it.. for a planet that has no easily attainable water resource, it sure does have a variety of "intelligence" that could be taken as natives. (Jawas, Tusken Raiders and Humans)

stillakid
01-22-2004, 10:03 AM
___________________________

Excerpt from "Boost Your B.S. Meter," Popular Science February 2004, page 61
Theories
A disclaimer appeared in the biological textbooks of Cobb County, Georgia in 2002: "Evolution is a theory, not a fact, regarding the origin of living things." In an absolute sense, this is true: Theories are proposed or accepted explanations based on assembled evidence. But in science, many theories - the theory of gravity, for example - enjoy near universal acceptance, based on the preponderance of evidence and the success of the model. The term "theory" does not imply doubts about a phenomenon's fundamental existence.

stillakid
01-22-2004, 10:07 AM
I think that Tatooine = Modesto, CA? might be a better question. Lucas was probably trying to say just how "away from it all" he seems as he was growing up, so a desolate planet could stand in for a place that seems to be going nowhere, furthest from the brightest center, out-of-the-way poor, etc. But I like the idea that the most "distant" areas are possibly the oldest.

I'll get my spaceship and meet you there!


Excellent insight! I hadn't put 2 and 2 together there. It makes perfect sense! Except when you look at the Prequels and his "theoretical" :rolleyes: desire to make Tatooine the center of the universe ala Arrakis in the DUNE saga. He would have us believe that the Savior of our planet was born in Modesto sometime in the early 1900s? ;)

stillakid
01-22-2004, 11:03 AM
_____________________________________


excerpt from online discussion on Rational Judgement...full text and URL available by request <KR> The Comparison of ether in physics is wrong and simply shows the lack of absoute truth in science! What was true yesterday is junk today!!

<Avijit> Your problem is you do not know what the science is. First of all science is not a belief, that we wanted to emphasize from the very beginning. It depends on the scientific methods which in terms depends on various evidence and proof. How a theory is established in science ? For example Newton's 1st-2nd-3rd Laws, Einstein's general and special theory of relativity, or evolution theory? It is not that someone gives a theory and suddenly scientists accept it. Scientists are very skeptical, they cannot accept a theory without any valid evidence or scientific proof. They follow a systematic steps : To summarize the steps, scientific method comprises of:

1. Observations.

2. Making some plausible assumptions (premises) based on objective criteria,

like Occams' razor (i.e symmetry, simplicity, beauty etc. )

3. Logical reasoning (Using mathematical analysis and)

4. Formulation of a theory based on steps 1-3 and other established laws of science.

5. Prediction based on 3 and 4

6. Testing (i.e verify/falsify) the prediction by evidence which can be either through the results of experiments(repeatedly in a controlled setting) or through enough observations in nature.

IF (Falsified) THEN

go back to 2 and make a different set of plausible premises and

continue from step 3.

7. If step 6 is verified in more than one instance by evidence and observations then the theory is considered to be a law of nature.

In this systematic procedure, a well established theory can also be refuted if someone can bring substantial proof (which can be verified by step 6 and 7).

Thus in past time we have seen that Tolemy's "earth-centric theory" was refuted by Gallelio, Copernicus Bruno and others. Concept of ether is also rejected by the fellow physicists while it could not fulfill the criterion of simplicity (remember Occams' razor). And this is not the drawback of science, but it is a real power of flexibility. It follows systematical methods so that we can argue, debate, analyze, scrutinize and eventually find a scientific truth breaking any inherited dogma or manacles.

Science gives us a scope for analysis and correction and modification. [Look at what] happened to [sic] Galileo [sic] [and also the views of Pope Urban VIII prior to 1616. ]

Bel-Cam Jos
01-24-2004, 09:32 AM
Making some plausible assumptions (premises) based on objective criteria, like Occams' razor (i.e symmetry, simplicity, beauty etc. )
Concept of ether is also rejected by the fellow physicists while it could not fulfill the criterion of simplicity (remember Occams' razor).
Does the Ockham Razor come with rotating heads? Or the Lift-and-Cut System? Ooh! My sharp wit has made its point! :crazed:

He would have us believe that the Savior of our planet was born in Modesto sometime in the early 1900s?
"I'm not a hero, I'm not a savior, forget what you know
I'm just a man who's circumstances went beyond his control
Beyond my control, I need control
I need control, We all need control"
Creative control over cinematic projects, that's all. Just an independent filmmaker with a bankable movie franchise, not a world leader... :p

stillakid
01-24-2004, 12:00 PM
Creative control over cinematic projects, that's all. Just an independent filmmaker with a bankable movie franchise, not a world leader... :p


Well, that and his unquenchable desire to be seen as the One who liberated Hollywood from the "limitations" of actual film as he brings us all the glories of Digital Technology. ;)