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Lasers could 'cloak Earth from aliens'
BBC News ^ | 3/31/3016

Posted on 03/31/2016 10:40:20 AM PDT by sparklite2

We should shine lasers into space if we want to hide our presence from aliens, two US-based astronomers suggest.

The beams could compensate for the dip in light the Earth creates when it passes in front of the Sun, as viewed from far-off worlds, they contend.

But an alternative might be to use a laser simply to disguise the interesting aspects about Earth - features in its atmosphere that betray the fact that life exists here. These are a suite of gases that include oxygen, ozone and methane.

(Excerpt) Read more at bbc.com ...


TOPICS: Humor; Science
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To: driftdiver

I’m kind of thinking the 100 years worth of radio traffic would be a clue, assuming they bust through all the clutter.


41 posted on 03/31/2016 11:05:18 AM PDT by Jewbacca (The residents of Iroquois territory may not determine whether Jews may live in Jerusalem)
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To: Jewbacca
I’m kind of thinking the 100 years worth of radio traffic would be a clue, assuming they bust through all the clutter.


42 posted on 03/31/2016 11:06:25 AM PDT by dfwgator
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To: MortMan

So Im going to point a very powerful beam of coherent light energy at a moving target a gazillion miles away to hide the earth?

Wouldn’t a laser powerful enough to hide the earth a gazillion miles away necessarily be awful dang powerful. Almost like a weapon.

I’m sure this band of interstellar non-humans would be a bit annoyed at our feeble attempts to fry their corneas.

Then theres the issue of what frequency is this laser. What frequency do the illegal non-humans perceive?


43 posted on 03/31/2016 11:06:34 AM PDT by driftdiver (I could eat it raw, but why do that when I have a fire.)
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To: G Larry; sparklite2
Humans are the only threat to earth and it has nothing to do with population control or global warming.

Gamma Ray burst, magnetic pole flip, comets, asteroids, rogue black holes

Shall I go on?

44 posted on 03/31/2016 11:07:25 AM PDT by Pontiac (The welfare state must fail because it is contrary to human nature and diminishes the human spirit.)
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To: driftdiver

Couldn’t we just hire David Copperfield, I once saw him hide a Lear Jet.


45 posted on 03/31/2016 11:07:30 AM PDT by dfwgator
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To: sparklite2

Maybe some aliens have a taste for “slumming”.


46 posted on 03/31/2016 11:08:13 AM PDT by Farmer Dean (168 grains of instant conflict resolution)
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To: GraceG

Plus they wont like being called solar...that’s bigoted...

I’m sure they would prefer the more inclusive “planet” or planetary ...

its American errr global values after all...

after all we are not a sun...


47 posted on 03/31/2016 11:08:33 AM PDT by Tennessee Nana
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To: sparklite2

I prefer a Dyson Sphere to simply enclose our entire solar system.


48 posted on 03/31/2016 11:09:37 AM PDT by Jewbacca (The residents of Iroquois territory may not determine whether Jews may live in Jerusalem)
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To: sparklite2

49 posted on 03/31/2016 11:10:11 AM PDT by DannyTN
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To: Tennessee Nana

[ Plus they wont like being called solar...that’s bigoted...

I’m sure they would prefer the more inclusive “planet” or planetary ...

its American errr global values after all...

after all we are not a sun... ]

Undocumented Galactic Resident?


50 posted on 03/31/2016 11:10:13 AM PDT by GraceG (The election doesn't pick the next president, it is an audition for "American Emperor"...)
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To: Pontiac

Not to mention the inevitable merger with Andromeda. I’m saving up my air travel miles to head for the hills when that happens.


51 posted on 03/31/2016 11:10:50 AM PDT by sparklite2 ( "The white man is the Jew of Liberal Fascism." -Jonah Goldberg)
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To: mountainlion

They’d have to build a bypass.

Call the vogan construction fleet.

I hear their poetry is quite good.


52 posted on 03/31/2016 11:11:03 AM PDT by Jewbacca (The residents of Iroquois territory may not determine whether Jews may live in Jerusalem)
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To: sparklite2

Well this is good to know!. Now I can stop spending a fortune on aluminum foil.


53 posted on 03/31/2016 11:11:24 AM PDT by jmacusa ("Dats all I can stands 'cuz I can't stands no more!''-- Popeye The Sailorman.)
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To: driftdiver
Umm wouldn’t the laser kinda draw attention?

Monochromatic, coherent light, like from a laser, pretty much screams out "Technological civilization here!"

54 posted on 03/31/2016 11:12:13 AM PDT by PapaBear3625 (Big government is attractive to those who think that THEY will be in control of it.)
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To: sparklite2

Well considering Andromeda is 3million, 200,000 light years away and closing you’ve got some time. Order a pizza. I’m sure Andromeda will get here before the pizza does.


55 posted on 03/31/2016 11:13:24 AM PDT by jmacusa ("Dats all I can stands 'cuz I can't stands no more!''-- Popeye The Sailorman.)
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To: sparklite2

Goodness knows that aliens that have mastered interstellar travel, will totally have no idea how physics works!


56 posted on 03/31/2016 11:14:43 AM PDT by VanDeKoik
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To: sparklite2

What an idiotic waste of taxpayer money!


57 posted on 03/31/2016 11:16:22 AM PDT by erkelly
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To: Jewbacca

58 posted on 03/31/2016 11:16:29 AM PDT by driftdiver (I could eat it raw, but why do that when I have a fire.)
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To: sparklite2

Can we use them on Muslims?


59 posted on 03/31/2016 11:16:33 AM PDT by beethovenfan (Islam is a cancer on civilization.)
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To: sparklite2

I thought that all those “I love Lucy” shows was sufficient to keep them away.


60 posted on 03/31/2016 11:18:26 AM PDT by Bringbackthedraft (HILLARY 2016 - SERIOUSLY? What are they thinking?)
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