Old 04-12-2016, 10:47 PM #1
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Default Laser cloak could hide Earth from extraterrestrial beings

Interesting thought.

"A simple laser beam could disrupt aliens' observations of Earth, making it look like there's nobody home on the third rock from the sun, a new study suggests. David Kipping, an astronomer at Columbia University in New York, said he first considered this idea when he heard about the strangely dimming star that was detected recently by NASA's Kepler space telescope." from: http://www.livescience.com/54271-las...om-aliens.html

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Old 04-12-2016, 10:53 PM #2
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Default Re: Laser cloak could hide Earth from extraterrestrial beings

Quote:
Originally Posted by Encap View Post
"A simple laser beam could disrupt aliens' observations of Earth, making it look like there's nobody home on the third rock from the sun, a new study suggests. David Kipping, an astronomer at Columbia University in New York, said he first considered this idea when he heard about the strangely dimming star that was detected recently by NASA's Kepler space telescope." from:
Did a laser hide the rest of the post?

Edit:Read the article. It's certainly and interesting idea. It will be interesting to see if any abnormalities are detected in going through archival data.

Last edited by InfinitusEquitas; 04-12-2016 at 11:06 PM.
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Old 04-12-2016, 11:17 PM #3
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Default Re: Laser cloak could hide Earth from extraterrestrial beings

But if we keep using radio frequency or RF, the laser beam won't hide that.
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Old 04-12-2016, 11:24 PM #4
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Default Re: Laser cloak could hide Earth from extraterrestrial beings

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Originally Posted by Alaskan View Post
But if we keep using radio frequency or RF, the laser beam won't hide that.
That's a good point, I can't imagine how we could cloak our radio transmissions. I Think it's too late anyway, they already found us a long time ago.

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Old 04-12-2016, 11:32 PM #5
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Default Re: Laser cloak could hide Earth from extraterrestrial beings

Why hide, there will always be civilizations lessor and greater than our own, I expect. It's just to big out there for reality to be any other way.
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Old 04-12-2016, 11:45 PM #6
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Default Re: Laser cloak could hide Earth from extraterrestrial beings

Here is a link to the full scholarly published paper, not just a Science News level blurb:

A Cloaking Device for Transiting Planets
By David M. Kipping and Alex Teachey, Dept. of Astronomy, Columbia University, 550 W 120th Street, New York NY 10027

http://mnras.oxfordjournals.org/cont...tw672.full.pdf

From the above paper:
"DISCUSSION"
"In this work, we suggest that directed laser emission may be
used to either broadcast or cloak the presence of the Earth to
extraterrestrial transit surveys. Motivated by earlier propos-
als of searching for mega-structures designed to create artificial
transits (Arnold 2005), we argue that artificial transits
could be produced with presently available technology. On
this basis, a search for artificial transit signatures, similar
to those described in this work, may be a worthwhile search
strategy for non-radio SETI.
We estimate that cloaking the Earth from a broad-
band Kepler -like survey could be achieved with an array
of monochromatic optical lasers emitting a peak power of
30MW. In this scheme, one would target a known Earth-
analog residing near the ecliptic (and thus can see the Earth
transit) and emit for 10 hours once per year. A O[10m2] so-
lar cell array would be sucient to gather this energy over
the course of a year, meaning that the laser array could
be feasibly placed in space. We estimate that a chromatic
cloak (effective at all wavelengths) would be an order-of-
magnitude more costly energetically."



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Old 04-14-2016, 05:03 AM #7
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Default Re: Laser cloak could hide Earth from extraterrestrial beings

I guess so. Honestly, I think that's a pretty cheesy research paper, falling into the "yeah, but so what?" category for me.
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Old 04-14-2016, 10:12 AM #8
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Default Re: Laser cloak could hide Earth from extraterrestrial beings

i'm suited up, got my boots ready, got my plasma cutter ready, i'm ready to fight for our Independence..... if that ever happens.
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