Hawking: Beware the Alien Menace!

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NS: It's too late to worry that the aliens will find us

Post by bystander » Mon Jul 05, 2010 6:00 pm

It's too late to worry that the aliens will find us
New Scientist | Opinion | 05 July 2010
Image
STEPHEN HAWKING is worried about aliens. The famous physicist recently suggested that we should be wary of contact with extraterrestrials, citing what happened to Native Americans when Europeans landed on their shores. Since any species that could visit us would be far beyond our own technological level, meeting them could be bad news.

Hawking was extrapolating the possible consequences of my day job: a small but durable exercise known as SETI, the Search for Extraterrestrial Intelligence.

Although we have yet to detect an alien ping, improvements in technology have encouraged us to think that, if transmitting extraterrestrials are out there, we might soon find them. That would be revolutionary. But some people, Hawking included, sense a catastrophe.

Consider what happens if we succeed. Should we respond? Any broadcast could blow Earth's cover, inviting the possibility of attack by a society advanced enough to pick up our signals.

On the face of it, that sounds like a scenario straight out of cheap science fiction. But even if the odds of calamity are small, why gamble?

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Re: Hawking: Beware the Alien Menace!

Post by orin stepanek » Mon Jul 05, 2010 7:47 pm

We may never find an alien life form by sending out signals. Some things to consider: we have only been able to communicate signals in to outer space for a very short time. The intelligent life span on Earth may not match up time wise with the intelligent life spans on other planets. If ET did hear our signals and decided to pay us a visit; it would probably take several lifespans to get here. I'll be long gone so I don't worry about it. :mrgreen:
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Where Would Space Aliens Come From?

Post by bystander » Tue Jul 06, 2010 8:00 pm

Where Would Space Aliens Come From?
Discovery News | 06 July 2010
Ray Villard wrote:A reader reminded me that today is the 63rd anniversary of the so-called Roswell UFO Incident. Even if you know nothing else about the UFO phenomenon, you certainly have heard about what supposedly happened in Roswell, New Mexico in July, 1947: a crashed flying saucer, autopsies on alien bodies, Government cover-ups. It ushered in the 1950s kitsch of bubble-headed little green space jockeys inside silvery saucers flitting across our skies.

This space-age mythology, embellished over the years, tells of an alien interstellar vehicle simply falling out of the sky near a desert town. The only tangible evidence is scraps of wood and metal foil and other mundane debris that suspiciously look like they came from a crashed U.S. military balloon. That is, unless you believe the Government has been hiding all the goodies -- including alien corpses -- inside an Indiana Jones style warehouse all these decades.

This leads me to wonder that if flying saucers are supposedly real, why haven't we learned where the visitors come from among the stars? Didn't the Roswell aliens leave a driving map in their glovebox?

If someone who claimed to be in contact with space aliens could give us just a few simple numbers they’d unequivocally prove their case to skeptics. Simply send me (1) the celestial coordinates of the home star, (2) the number of planets orbiting it, (3) their distances from the parent star, (4) and their relative masses. Then all we’d have to do is look at the star and see if the planets were there. Viola!

This has never happened in UFO history. Well, almost never.

A search on the Internet comes up with one particularly legendary place, the double star system Zeta Reticuli. It's nearby, only 39 light-years away in the southern sky.

The naked-eye double star burst into UFO culture in the mid -1970s. An Ohio school teacher, Marjorie Fish, claimed to have decoded a star map from a 1961 UFO abduction case. It pointed to Zeta Reticuli as the aliens' place of origin.

The alleged extraterrestrial kidnapping, described in journalist John Fuller’s book “Incident at Exeter: The Interrupted Journey,” tells how a New England couple was taken aboard a flying saucer and medically examined. Under hypnotic regression the wife, Betty Hill, sketched a star map she said she saw while inside the spaceship.

In the pre-home computer days of the early 1970s, Fish actually constructed a wireframe cube and positioned beads on strings for the nearby stellar neighborhood. She viewed the model from different angles until a match was found with the Hill map. It pinpointed Zeta Reticuli.

This map is legendary but meaningless. First, the Hill drawing contains 25 dots for stars. If you flew around a computer database of the local stellar neighborhood you’d come up with more than one match that roughly “looked” similar to her sketch.

Secondly, Hill described the map as showing alien exploration and trade routes to other stars. The notion of trade between extraterrestrial civilizations is patently absurd. There is nothing worth trading that would justify the transportation costs (at least nothing short of Star Trek’s Green Orion Slave Women). And, clearly the Zeta Reticulans aren’t trading with us, unless they’re getting modeling fees and a cut from Roswell UFO souvenir stands.

Finally, in the Fuller book Hill described the map as a flat pull-down chart (later she changed her account and described it vaguely to me, in a hesitant voice, as some sort of 3D display). BTW the UFO also carried paperbound books with “Chinese looking printing” according to Hill. This is as nonsensical as Neil Armstrong carrying stone tablets to the moon. Didn't the aliens at least have something like an iPad?

Today, the Hill map even has a link to the Roswell incident. According to one website the Roswell aliens supposedly set up a secret exchange program with the U.S. military. Apparently 12 humans were sent to the home planet, named Serpio, in the Zeta Reticuli system. The write-up describes a “10-month journey” with poor food (what do you expect from an interstellar airliner?)

The reality is that the Zeta Reticuli system is a fascinating place where I’d expect to find advanced life. The two stars are similar to our sun and separated by 800 billion miles. This would leave plenty of elbowroom for inhabited planets to exist around both stars.

The stars are estimated to be as much as 3 billion years older than our Sun. Any intelligent life that originated there would be far too advanced for the shenanigans reported in Roswell. What's more, you could not place a sentient entity a billion years more evolved than us onto a dissection table. And, it definitely would not be humanoid, or perhaps even biological.

Therefore, it's simply ludicrous to imagine that there really was such a wayward craft over Roswell with pilots of flesh and blood. Over the past 50 years our newbie space civilization has reconnoitered the entire solar system with a pretty nimble and savvy armada of robots. They self-navigate into stable orbits and landings on hostile worlds. At least when one of them crashes, nobody gets killed.

Similarly, a native technological intelligent species certainly would be enticed to explore any inhabited planets orbiting the companion star in the Zeta Reticuli system. They would rapidly become an “extra-terrestrial” space-faring civilization. They would be motivated to develop far-advanced propulsion systems needed to hop over to the companion star. Such a trip would take close to 2,000 years with our present generation space vehicles.

In this star system UFOs could become reality. That’s because a less-advanced civilization on the companion star might be able to see manifestations of a visiting advanced intelligence from the neighboring binary companion. Eventually they could decide to send a living emissary for a face-to-face contact between civilizations, assuming a similar astrobiology. It could be a scene straight out of the sci-fi classic film “Avatar.”

To date, no planets have been found around either star. NASA’s Spitzer Space Telescope did find the telltale glow of a dusty disk that would indicate planets are present.

As our survey techniques improve it’s probably only a matter of time before we discover a family of worlds in the Zeta Reticuli system. And, follow-up observations will seek out the biosignatures of life on any planets in habitable zones. This is a far more enthralling future narrative than the unimaginative fantasy of some space hot rodders totaling their vehicle in the middle of nowhere.

Now, Roswell UFO believers can save us a lot of time and effort by simply telling us exactly what the planetary system looks like ...
Life: Are We Alone?

swainy

Re: Hawking: Beware the Alien Menace!

Post by swainy » Tue Jul 06, 2010 8:56 pm

Hi all.

Check this out, And not just my link. I Mean really check this out.

http://ethnography.suite101.com/article ... est-africa

tc

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Re: Hawking: Beware the Alien Menace!

Post by owlice » Tue Jul 06, 2010 8:58 pm

bystander, thanks for posting that! I think it clears up a little mystery for me!
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UCI: Finding frugal aliens: ‘Benford beacons’ concept

Post by bystander » Thu Jul 22, 2010 1:44 am

Finding frugal aliens: ‘Benford beacons’ concept
University of California, Irvine | 21 July 2010
‘Benford beacons’ concept could refocus search for signs of intelligent extraterrestrial life

For 50 years, humans have scanned the skies with radio telescopes for distant electronic signals indicating the existence of intelligent alien life. The search — centered at the SETI Institute in Mountain View, Calif. — has tapped into our collective fascination with the concept that we may not be alone in the universe.

But the effort has so far proved fruitless, and the scientific community driving the SETI project has begun questioning its methodology, which entails listening to specific nearby stars for unusual blips or bleeps. Is there a better approach?

UC Irvine astrophysicist Gregory Benford and his twin, James — a fellow physicist specializing in high-powered microwave technology – believe there is, and their ideas are garnering attention.

In two studies appearing in the June issue of the journal Astrobiology, the Benford brothers, along with James’ son Dominic, a NASA scientist, examine the perspective of a civilization sending signals into space – or, as Gregory Benford puts it, “the point of view of the guys paying the bill.”

“Our grandfather used to say, ‘Talk is cheap, but whiskey costs money,’” the physics professor says. “Whatever the life form, evolution selects for economy of resources. Broadcasting is expensive, and transmitting signals across light-years would require considerable resources.”

Assuming that an alien civilization would strive to optimize costs, limit waste and make its signaling technology more efficient, the Benfords propose that these signals would not be continuously blasted out in all directions but rather would be pulsed, narrowly directed and broadband in the 1-to-10-gigahertz range.

“This approach is more like Twitter and less like War and Peace, ” says James Benford, founder and president of Microwave Sciences Inc. in Lafayette, Calif.

Their concept of short, targeted blips — dubbed “Benford beacons” by the science press — has gotten extensive coverage in such publications as Astronomy Now. Well-known cosmologist Paul Davies, in his 2010 book The Eerie Silence: Renewing Our Search for Alien Intelligence, supports the theory.
Messaging with Cost-Optimized Interstellar Beacons Searching for Cost-Optimized Interstellar Beacons The frugal alien's beacon
Astronomy Now | 08 Jun 2010
August, 15 1977: a pulse of radio waves at 1,420MHz radiates down from space to be received by the Big Ear radio telescope in Ohio for 72 seconds. Then: nothing. Sporadic searches of the area since have failed to find this interstellar radio chorus. It’s origins remain a mystery.

We are of course talking about the fabled ‘Wow!’ signal, the SETI detection that never was. Critics argued that because it switched off after a short time, never to heard from again, it could not be a real alien signal. There was no message contained within it, no structure, no signature of intelligent design.

Now there is a new explanation that raises the credibility of the ‘Wow’ signal’s extraterrestrial hypothesis, an idea we’ll call ‘Benford Beacons’.
Want to Call Aliens? Keep it Short and Simple, Scientists Say
Space.com | 21 July 2010
If extraterrestrials ever phoned us, they would be more likely to send narrowly directed bursts than constantly blaring signals — more text-messaging than novel-writing, some scientists now suggest.

Such a strategy also would be more practical for anyone on Earth to reach out to aliens — if one had at least a billion dollars to spend.
...
Have we seen a beacon?

One possibility of an extraterrestrial beacon is a puzzling transient radio source some 26,000 light-years from Earth that was discovered in 2002 in the direction of the galactic center. It sends out radio waves in bursts lasting up to 10 minutes in a 77-minute cycle.

Scientists have suggested the source, labeled GCRT J17445-3009, is a flare star, an extrasolar planet, a pulsar or a brown dwarf, but none of these explanations fits well, the Benfords said.

Based on the burst length and the short cycle, the Benfords doubt GCRT J17445-3009 is a beacon aimed at possible civilizations among a large crowd of stars. Still, if GCRT J17445-3009 is artificial in nature, it could be a signal that aliens pointed just at us, having detected signs of life from our planet. If that is the case, the Benfords said, we may want to pay closer attention to its signals to look for hidden details.

On the other hand, GCRT J17445-3009 could be one link in an interstellar communications network. If so, it would make sense to look in the opposite direction, to see if another beam was communicating at it.

"We studied GCRT not because we really think it's a beacon, but because it's an interesting way to look at similar bursting sources," Gregory Benford said. "There's the famous 'Wow' signal from 1977, for instance, that involved an enormous amount of power, and that there's still no good explanation for."

Calling aliens

Instead of just searching for extraterrestrial intelligence, the Benfords also considered messaging to extraterrestrial intelligences, or METI. They calculated that a galactic-scale beacon, with an antenna roughly a half-mile (0.9 km) wide with a range of a little more than 1,000 light-years, could be built for $1.3 billion. It would cost $200 million annually to operate. To work economically, it would use only narrow, high-power microwave beams and 35-second bursts aimed at each target star.

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Hawking: Mankind must abandon earth or face extinction!

Post by bystander » Tue Aug 10, 2010 11:29 pm

Mankind must abandon earth or face extinction
PhysOrg | Space Exploration | 09 Aug 2010
Mankind's only chance of long-term survival lies in colonising space, as humans drain Earth of resources and face a terrifying array of new threats, warned British scientist Stephen Hawking on Monday.

"The human race shouldn't have all its eggs in one basket, or on one planet," the renowned astrophysicist told the website Big Think, a forum which airs ideas on many subjects from experts.

"Our only chance of long-term survival is not to remain inward looking on planet Earth, but to spread out into space," he added.

He warned that the human race was likely to face an increased number of events that threaten its very existence, as the Cuban missile crisis did in 1962.
...
His comments came after he warned in a recent television series that mankind should avoid contact with aliens at all costs, as the consequences could be devastating.

Humanity Won't Survive Without Leaving Earth
Space.com | 10 Aug 2010
If humanity is to survive long-term, it must find a way to get off planet Earth — and fast, according to famed astrophysicist Stephen Hawking.

In fact, human beings may have less than 200 years to figure out how to escape our planet, Hawking said in a recent interview with video site Big Think. Otherwise our species could be at risk for extinction, he said.

"It will be difficult enough to avoid disaster in the next hundred years, let alone the next thousand or million," Hawking said. "Our only chance of long-term survival is not to remain inward-looking on planet Earth, but to spread out into space."

Humans stuck on Earth are at risk from two kinds of catastrophes, Hawking said. First, the kind we bring on ourselves, such as possible devastating impacts from climate change, or nuclear or biological warfare.

A number of cosmic phenomena could spell our demise, too. An asteroid could slam into Earth, killing large swaths of the population and rendering the planet uninhabitable. Or a supernova or gamma-ray burst near our spot in the Milky Way could prove ruinous for life on Earth.

Life on Earth could even be threatened by an extraterrestrial civilization ...

"The human race shouldn't have all its eggs in one basket, or on one planet," he told Big Think. "Let's hope we can avoid dropping the basket until we have spread the load."
If Humans Survive a Couple Centuries, We’ll Get Off This Rock
Discover Blogs | 80beats | 10 Aug 2010
Listen, people of Earth: Everything’s going to be fine. All we have to do is survive another century or two without self-destructing as a species. Then we’ll get off this rock, spread throughout space, and everything will be all right.

If this is not your idea of “optimism,” then you are not Stephen Hawking. The esteemed physicist garnered headlines, and some eye-rolls, after telling Big Think last week that humanity needs to leave the Earth in the future or face extinction.
  • He’s not knocking climate scientists’ attempts to figure things out on Earth–he’s just thinking long term. “There have been a number of times in the past when our survival has been touch-and-go,” explains Hawking at Big Think, mentioning the Cuban Missile Crisis, and “the frequency of such occasions is likely to increase in the future…. Our population and our use of the finite resources of the planet earth are growing exponentially along with our technical ability to change the environment for good or ill,” while “our genetic code still caries our selfish and aggressive instincts” [The Atlantic]
Combined with Hawking’s statement earlier this year that it might be dangerous to contact aliens because they could come and wipe us out, the physicist’s latest warning makes it feel like he’s increasingly a member of the gloom-and-doom crowd. But not so. He’s just the kind of person who thinks on the long, long term.
Click to play embedded YouTube video.
Let’s jump back to another publicly engaged scientist: Carl Sagan’s message in Cosmos that the stars await… if we don’t destroy ourselves.

Sagan was pushing urgency and vigilance, not gloominess. The same, I think, is true of Hawking—it’s why he calls himself an “optimist” despite his dire warnings of treacherous times ahead. Indeed, he says, if humanity can just get past the next 200 years without driving itself to extinction, then we’re good to go. Once we spread to different locations in space, no event contained to a single world—even a catastrophic one like all-out nuclear war or a massive asteroid strike—could do in the species by itself.

Hawking concludes the Big Think message about the necessity of a human future in space by saying, “That is why I’m in favor of manned, or should I say ‘personed’, space flight.” That is: Putting people back on the moon or take them to Mars wouldn’t be just a vainglorious gesture. The next phase of humanity demands it.

He’s far from the only one thinking far into the future. Take DISCOVER blogger Phil Plait, who, in his book Death from the Skies!, discusses audacious plans for our ancestors to take way, way down the line to survive the slow dying and then death of the sun. (For a culture so plugged into now, it seems laughable to consider something billions of years down the line. But where Hawking may be proven wrong in his 100-200 years statement, he is clearly correct about the options for humanity’s long-term future: We’ll either leave the Earth or die before we get the chance.)

Or, if you want to go all the way to the far end of the optimism spectrum, take another future-obsessed theoretical physicist: Michio Kaku, whom I interviewed about his TV show Sci-Fi Science for the September issue of DISCOVER, on newsstands now. The outline of a Type I, or global, civilization is now emerging on the Earth, he says, with the Internet and even type I sports—like the FIFA World Cup. And whether or not you agree humans are doomed if they don’t leave the Earth for points beyond, he believes our future is out there.

“It’s not guaranteed we’ll [even] hit Type I,” he says. “But I’m optimistic.”

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Re: Hawking: Beware the Alien Menace!

Post by neufer » Wed Aug 11, 2010 12:00 am

Click to play embedded YouTube video.
Click to play embedded YouTube video.
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Re: Hawking: Beware the Alien Menace!

Post by bystander » Tue Aug 17, 2010 9:52 pm

Do We Dare Let Aliens Know We're Here?
Space.com | Science | 17 Aug 2010
Even if humanity could reach out to an intelligent alien civilization, scientists are polarized over whether we should.

Famed astrophysicist Stephen Hawking has argued that the extraterrestrials we contacted would be likely to harm us, a view that divided the experts here at the SETIcon convention.

"No one can say that there is no risk to transmitting," John Billingham, former chairman of the SETI (Search for Extraterrestrial Intelligence) Committee of the International Academy of Astronautics, said via a statement read at the convention Sunday. "Personally, I agree with Hawking and think it may be unwise to transmit."

However, Douglas Vakoch, director of interstellar message composition at the SETI Institute, said of aliens: "Even if they tend to be hateful, awful folks, can they do us any harm at interstellar distances?"

Up to now, the efforts of SETI have concentrated on receiving and recognizing signals from non-natural sources in space.
Proof of Aliens Could Come Within 25 Years
Space.com | Search for Life | 16 Aug 2010
Proof of extraterrestrial intelligence could come within 25 years, an astronomer who works on the search said Sunday.

"I actually think the chances that we'll find ET are pretty good," said Seth Shostak, senior astronomer at the Search for Extraterrestrial Intelligence Institute in Mountain View, Calif., here at the SETI con convention. "Young people in the audience, I think there's a really good chance you're going to see this happen."

Shostak bases this estimation on the Drake Equation, a formula conceived by SETI pioneer Frank Drake to calculate the number (N) of alien civilizations with whom we might be able to communicate. That equation takes into account a variety of factors, including the rate of star formation in the galaxy, the fraction of stars that have planets, the fraction of planets that are habitable, the percent of those that actually develop life, the percent of those that develop intelligent life, the fraction of civilizations that have a technology that can broadcast their presence into space, and the length of time those signals would be broadcasted.

Reliable figures for many of those factors are not known, but some of the leaders in the field of SETI have put together their best guesses. Late great astronomer Carl Sagan, another SETI pioneer, estimated that the Drake Equation amounted to N = 1 million. Scientist and science fiction writer Isaac Asimov calculated 670,000. Drake himself estimates a more conservative 10,000.

But even if that lower value turns out to be correct, at the rate they're going, it wouldn't take scientists too long to discover an alien signal, Shostak said.
http://asterisk.apod.com/vie ... 23&t=20672
http://asterisk.apod.com/vie ... 60#p128560

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xkcd: Stephen Hawking

Post by bystander » Wed Sep 29, 2010 10:34 pm


swainy (tc)

Re: Hawking: Beware the Alien Menace!

Post by swainy (tc) » Thu Sep 30, 2010 9:01 pm

Here's one, for your comic strip, bystander.

Two men swim ashore. The one man looks to his buddy, " I name this New Land Australia". His Mate Looks Back And Say's " Err Is there anything here that might hurt Us" ? (The only answer can be), WHO KNOWS ?

tc

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Re: Hawking: Beware the Alien Menace!

Post by bystander » Thu Sep 30, 2010 9:50 pm

swainy (tc) wrote:Two men swim ashore. The one man looks to his buddy, " I name this New Land Australia". His Mate Looks Back And Say's " Err Is there anything here that might hurt Us" ? (The only answer can be), WHO KNOWS ?
And that relates to Hawking, how?

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Re: NS: It's too late to worry that the aliens will find us

Post by neufer » Thu Sep 30, 2010 9:58 pm

Gliese581g is just 20 light years away!!!

Who here thinks that we should be beaming Gliese581g with radio/laser signals?

And should we be listening for retransmissions of Arte Johnson (c 1970)?
http://en.wikipedia.org/wiki/Contact_%28novel%29 wrote:
Click to play embedded YouTube video.
<<Eleanor "Ellie" Arroway is the director of "Project Argus," in which scores of radio telescopes in New Mexico have been dedicated to the search for extraterrestrial intelligence (SETI). Before long, the project does, indeed, discover the first confirmed communication from extraterrestrial beings, a repeating series of the first 261 prime numbers. Further analysis reveals that a second message is contained in polarization modulation of the signal. The second message is a retransmission of Earth's first television signal broadcast powerfully enough to escape the ionosphere and be received in interstellar space; in this case, Adolf Hitler's opening speech at the 1936 Summer Olympics in Berlin. A third message is discovered containing over 30,000 pages describing plans for a machine that appears to be a kind of highly advanced vehicle, with seats for five human beings. But they can't understand the third message until they find the fourth message, a primer hidden in phase modulation. The primer allows them to translate the alien language to human language.

In a kind of postscript, Ellie, acting upon a suggestion by the senders of the message, works on a program which computes the digits of π to record lengths and in different bases. Very, very far from the decimal point (1020) and in base 11, it finds that a special pattern does exist when the numbers stop varying randomly and start producing 1s and 0s in a very long string. The string's length is the product of 11 prime numbers. The 1s and 0s when organized as a square of specific dimensions form a rasterized circle.

The extraterrestrials suggest that this is an artist's signature, woven into the very fabric of space-time. It is another message, one from the universe's creator. Yet the extraterrestrials are just as ignorant to its meaning as Ellie, as it could be still some sort of a statistical anomaly. They also make reference to older artifacts built from space time itself (namely the wormhole transit system) abandoned by a prior civilization. A line in the book suggests that the image is a foretaste of deeper marvels hidden even further within Pi. This new pursuit becomes analogous to SETI; it is another search for meaningful signals in apparent noise. This idea, among other plot points, was omitted from the film version.>>
Arte Neuen1415926dorffer

swainy (tc)

Re: Hawking: Beware the Alien Menace!

Post by swainy (tc) » Fri Oct 01, 2010 8:21 pm

bystander wrote:
swainy (tc) wrote:Two men swim ashore. The one man looks to his buddy, " I name this New Land Australia". His Mate Looks Back And Say's " Err Is there anything here that might hurt Us" ? (The only answer can be), WHO KNOWS ?
And that relates to Hawking, how?
No Mate,You miss understood Me. The big give away is the heading to this thread. The first humanity to walk on an alien soil, anywhere, even our own world face problems. And the potential problems are endless. This is what I believe Hawking is talking about. At any point, in any, new planets evolution we face huge problems. Just look at our own planets past. A Very Scary place at times. And very dangerous. But as you should know, It could be even worse. These Guys could have ten times our tech, and very ruthless. We as humans, did not get to our tech, without cost. Make up your own New world, chances are It really, probably is out there. The big snag is. No matter how nasty these guys are, We been shouting for the last hundred years. HEY GUYS, WE ARE HERE----> COME GET US.

tc

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Re: Hawking: Beware the Alien Menace!

Post by makc » Sun Oct 03, 2010 1:47 pm

gliese581 have lots of planets for them to "go get", why sail to small planet 20 light years away?

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Re: Hawking: Beware the Alien Menace!

Post by bystander » Mon Jan 10, 2011 3:19 pm

Study: If We're Not Alone, We Should Fear the Aliens
Space.com | Mike Wall | 2011 Jan 10
When considering the prospect of alien life, humankind should prepare for the worst, according to a new study: Either we're alone, or any aliens out there are acquisitive and resource-hungry, just like us.

These two unpalatable options are pretty much the only possibilities, according to the new study. That's because evolution is predictable, and alien biospheres should thus produce intelligent creatures much like us, with technological prowess and an ever-increasing need for resources.

But the fact that we haven't run across E.T. yet argues strongly for the latter possibility — that we are alone in the universe's howling void, the study suggests.
Predicting what extra-terrestrials will be like: and preparing for the worst - Simon Conway Morris
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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Re: Hawking: Beware the Alien Menace!

Post by neufer » Mon Jan 10, 2011 3:48 pm

bystander wrote:Study: If We're Not Alone, We Should Fear the Aliens
Space.com | Mike Wall | 2011 Jan 10
When considering the prospect of alien life, humankind should prepare for the worst, according to a new study: Either we're alone, or any aliens out there are acquisitive and resource-hungry, just like us.

These two unpalatable options are pretty much the only possibilities, according to the new study. That's because evolution is predictable, and alien biospheres should thus produce intelligent creatures much like us, with technological prowess and an ever-increasing need for resources.

But the fact that we haven't run across E.T. yet argues strongly for the latter possibility — that we are alone in the universe's howling void, the study suggests.
Predicting what extra-terrestrials will be like: and preparing for the worst - Simon Conway Morris
Populations with "an ever-increasing need for resources" probably don't last for long.

Interstellar travel is extremely difficult and would probably be used only as a last resort to escape a dying star. These folks would then move on to the nearest habitable planet (which would be very unlikely to also contain a technological society).

Any civilization that has mastered interstellar travel would probably only be interested in us as a scientific curiosity; which means that they would wish to have a minimal impact on us as a whole and that the interaction would probably only involve robot spacecraft.
Art Neuendorffer

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Re: Hawking: Beware the Alien Menace!

Post by Chris Peterson » Mon Jan 10, 2011 3:55 pm

neufer wrote:Populations with "an ever-increasing need for resources" probably don't last for long.
In other words, us. And since our own self-destructive behavior is not improving, the last thing we need to worry about is unfriendly aliens. We have met the enemy...
Chris

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neufer
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Re: Hawking: Beware the Alien Menace!

Post by neufer » Wed Jan 12, 2011 11:17 pm

Chris Peterson wrote:
neufer wrote:
Populations with "an ever-increasing need for resources" probably don't last for long.
In other words, us. And since our own self-destructive behavior is not improving, the last thing we need to worry about is unfriendly aliens. We have met the enemy...
[youtube]http://www.youtube.com/watch?v=oY59wZdC ... r_embedded[/youtube]
Art Neuendorffer

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Re: Hawking: Beware the Alien Menace!

Post by owlice » Wed Jan 12, 2011 11:50 pm

A lovely video; thanks for sharing it.
A closed mouth gathers no foot.

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bystander
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Re: Hawking: Beware the Alien Menace!

Post by bystander » Thu Jan 13, 2011 1:22 pm

Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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owlice
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Re: Hawking: Beware the Alien Menace!

Post by owlice » Thu Jan 13, 2011 2:04 pm

A lovely video; thanks for sharing it.
A closed mouth gathers no foot.

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Re: Hawking: Beware the Alien Menace!

Post by bystander » Thu Jan 13, 2011 2:55 pm

You're starting to repeat yourself. Early onset Alzheimer's?
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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owlice
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Re: Hawking: Beware the Alien Menace!

Post by owlice » Thu Jan 13, 2011 4:13 pm

Since you're reprising neufer, a reprise of my previous response seemed appropriate! And I may be too old for "early onset" anything...!
A closed mouth gathers no foot.

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bystander
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Re: Hawking: Beware the Alien Menace!

Post by bystander » Thu Jan 13, 2011 4:25 pm

I wasn't reprising neufer, I just thought the original video by the person who composed the music would be appropriate. The YouTube video was the same soundtrack, with new images and retitled.
Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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