Super Alien Civilizations: What Do They Really Want?

Excerpt from huffingtonpost.com


Highly advanced aliens seem MIA, according to a recent study by
astronomers at Penn State University. These researchers checked out a
huge gob of cosmic real estate — roughly 100,000 galaxies — and failed
to find clear evidence for any super-sized alien empires. 

At
first blush, this is an astounding result, given that the universe is
more than 13 billion years old. Surely that’s enough time for at least a
few ambitious alien species to establish the type of galactic-wide
imperium so beloved by sci-fi fans. 

Could it be that no one is
out there? Are we now free to declare ourselves the acme of brain power
in this part of the cosmos, and certify that everything out to 50
million light-years is Klingon-free?

That may be a bit overmuch.
Let’s consider what the Penn State folks really did. In a truly clever
piece of work, they used NASA’s WISE (Wide-Field Infrared Survey
Explorer) space telescope to measure the infrared light coming from all
those galaxies. Infrared is produced by anything warm — by heat.

The
second law of thermodynamics mandates that heat is the final product of
just about any type of engineered activity. Your auto shoots warm gases
out the tailpipe, the local utility plant dumps waste heat in a pond,
your TV gets warm… Waste heat is the elephant graveyard of all
processes using energy, which is to say, all processes. Even writing a
byte of data onto your hard drive produces some heat. So does erasing
it.

Now where there’s heat, there’s light (at least of the
infrared variety), so the Penn State astronomers were hunting for
galaxies that generated far more than the usual amounts of infrared.
This could be a tipoff for what’s called a Type III civilization — the
black belt of all societies — one that’s corralled the energy resources
of an entire galaxy to power the ultra-advanced lifestyles of its
residents. All that activity would generate prodigious amounts of waste
heat, and that’s what the astronomers sought. 

Alas, their hunt
failed to discover any interesting cases in which the total amount of
heat energy was comparable to the total light energy radiated by all the
stars in a galaxy. Bummer.

But hang on. What does that really say? 

Allow
me to vex you with some numbers. First, consider what the astronomers
could have detected. If you add up all the star shine of a typical
galaxy, it’s roughly 10 billion times more than is belched out by our
Sun, or 4 trillion trillion trillion watts. So the Penn State survey was
looking for galaxies producing roughly that amount of energy (or more)
in waste heat.

Possibly that number is beyond your everyday
experience. But consider what it implies. We now know that a galaxy
similar to our own could contain up to 100 billion habitable planets.
Even if every one of these worlds is gilded with an advanced
civilization, they would each have to be burning up a trillion times as
much energy as all of Homo sapiens combined for that galaxy to register
in the Penn State survey. That’s right, a trillion times as many
kilowatts as all of humanity’s lighting, heating, transport, warfare and
other entertainments — per planet. 

That’s asking a lot, and
obviously these alien super civilizations would have to be much
different than our own. Maybe their planets each house a trillion times
as many people as Earth, or, at the other extreme, perhaps they have
lifestyles that are a trillion times more profligate than ours. Call me
timid, but neither seems very reasonable.

The real problem here
(if you consider there’s a problem) is that our concept of super
civilizations assumes that they have the same mindset that we do; they
want what we want. We suppose there’s a law of the universe insisting
that advanced societies are always on a colonization binge, taking
control of as much of a galaxy as they can — similar to the Galactic
Federation or the Imperium of Man. Bigger is better.

But while
that view of upscale aliens comports with Darth Vader’s game plan, is
that what sophisticated societies really do? There are serious problems
with maintaining an empire spanning 100,000 light-years, not least of
which is the finite speed of rockets and radio. 

In addition,
there’s this: In the past few decades, we’ve finally begun to exploit
the fact that there’s a lot of benefit to making things smaller rather
than bigger (consider your personal electronics). As physicist Richard
Feynman once put it when discussing the scale of things, “there’s plenty
of room at the bottom.”

Furthermore, we also tend to assume that
big-dog extraterrestrials will relentlessly increase their energy use
per capita — a number that has long been a proxy for the standard of
living in our own society. But maybe what really happens is that
technology becomes very efficient, and energy use ceases to steadily
climb.

In other words, the view that being highly advanced implies
having more stuff gulping more energy might be an anthropocentric
aberration.

And by the way, in case the numbers bandied about here
have numbed your neocortex, let’s clearly state their implication: the
Penn State study has ruled out the existence of a certain type of
society. But it hasn’t limited the possibilities for myriad other kinds
of extraterrestrial civilizations. Those 100,000 galaxies could be
positively stuffed with intelligent beings — be they biological or
artificial — who happily exist with energy budgets that aren’t
staggeringly extreme.

So it’s still plausible that there’s a lot
of cosmic company out there. No, the new observations don’t jibe with
what’s portrayed in 21st century space opera. But what our species finds
desirable today — 200,000 years after Homo sapiens 1.0 — will
undoubtedly seem silly and quaint if we ever reach the point of
colonizing the galaxy. Star Wars represents today’s view of the future, not necessarily that of our descendants or of other species.

I
recommend maintaining some perspective: The other inhabitants of the
universe are alien — which is to say, they’re not like us.


Source Article from http://feedproxy.google.com/~r/AscensionEarth2012/~3/2ooTd9SIwmU/super-alien-civilizations-what-do-they.html

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