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SETI project to look for Alien laser flashes

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SETI project wants to hunt laser-wielding ETs

The Search for ExtraTerrestrial Intelligence (SETI) focuses mainly on looking for radio signals from civilizations elsewhere in the galaxy, but the SETI Institute is taking a new approach – and it involves lasers. Seeking funding via a crowdfunding campaign, the Institute wants to build a series of specialized camera observatories to constantly scan the entire sky in search for transient laser flashes that could be signs of intelligent life.

http://newatlas.com/seti-lasers-extra-terrestrial-alien-life/50500/



 

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Why We Need a New Type of SETI Instrument

Imagine this scenario: On a world orbiting a neighboring star, a society more advanced than our own has used large telescopes to survey all the planets within a few hundred light-years.  In this sample of a million worlds, it finds that one percent show the tell-tale atmospheric gases that indicate life.  One of these is Earth.

This society is sufficiently distant that clues to the existence of Homo sapiens, in the form of high-powered radio signals, have yet to arrive.  But their scientists know that Earth is laminated with biology of some kind.

And so, simply as a wake-up call to any intelligence that might be here, they occasionally “ping” Earth with a short flash of laser light – the kind of signal that any technically competent species could recognize as artificial and deliberate.

Such pinprick light flashes could be routinely dotting the heavens today, but we wouldn’t know.  Most telescopes are insensitive to short light pulses, and in any case are focused on tiny patches of the sky.  We would no more be aware of such signals than Columbus was of Jupiter’s moons, despite the fact that they were in plain sight.

http://www.seti.org/why-we-need-a-new-type-of-seti-instrument7


 

 

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We needs mo' money!

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I also think we will see other life, before we hear it, with advanced telescopes that are forthcoming.

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Posted (edited)

You know, the Universe is so vast that even if it is teaming with intelligent life, all of that life may be so far away from us we will never make contact or even discover they are there.

Edited by seanjo
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we are looking for evidence of alien life that still use light or EM spectrum for communication. how much longer are we going to use EM for communication? 50 years? how much longer until we develop a viable quantum communication method? so we are looking for civilizations that exist in a maybe 300 year period of time. if they use other methods, more advanced methods, how will we detect it?

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49 minutes ago, pbarosso said:

we are looking for evidence of alien life that still use light or EM spectrum for communication. how much longer are we going to use EM for communication? 50 years? how much longer until we develop a viable quantum communication method? so we are looking for civilizations that exist in a maybe 300 year period of time. if they use other methods, more advanced methods, how will we detect it?

 

actually when we look at stars we are literally looking back in time


 

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Why is looking out into space the same as looking back in time?

This is because of the finite speed of light. When we look at objects that are very large distances away from us, the light that is hitting us now will have started from the object quite a long time ago, so in effect we aren't looking at what the object looks like now but what it looked like some time ago (when the light was emitted).

For example, Proxima Centauri, which is the closest star to us (other than the Sun), is about 4 light-years away. This means that the light we see from it now left the star about 4 years ago. Something catastrophic could have happened to the star within those four years and we can't know about it yet (but that's unlikely, by the way!).

http://curious.astro.cornell.edu/about-us/133-physics/general-physics/general-questions/835-why-is-looking-out-into-space-the-same-as-looking-back-in-time-beginner


 

 

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SETI is looking for Earth2 along with humanoid2. Indeed, a very small slice of the intelligent-life pie.

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Posted (edited)

1 hour ago, pbarosso said:

we are looking for evidence of alien life that still use light or EM spectrum for communication. how much longer are we going to use EM for communication? 50 years? how much longer until we develop a viable quantum communication method? so we are looking for civilizations that exist in a maybe 300 year period of time. if they use other methods, more advanced methods, how will we detect it?

It is a track of logic that a hypothetical alien civilization, with a hypothetical higher level of technology than humans, stepped through levels of "lower" technology during their development. So it is probable that this hypothetical alien civilization used EM for communication attempts/ communication in their past, maybe successfully. If they might use other channels than EM today, they would use EM today as well because its a known medium to communicate. Its unlikely that a highly developed hypothetical alien civilization would not use all the options that are available, when looking for contact/s.

Edited by toast
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1 hour ago, pbarosso said:

we are looking for evidence of alien life that still use light or EM spectrum for communication. how much longer are we going to use EM for communication? 50 years? how much longer until we develop a viable quantum communication method? so we are looking for civilizations that exist in a maybe 300 year period of time. if they use other methods, more advanced methods, how will we detect it?

we have to work with the technology we have at present and that's all we can do and hope for best . with our own progress we should adopt new ways of hunting alien life 

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im starting to get the feeling they might be screening our calls

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If SETI detect a signal from an alien civilisation in the EM band it may well have been transmitted so long ago that the senders of the signal have either become extinct, left their home star long ago or evoloved to become non-corporeal. 

It'd still be really iinteresting to know that other civilisations exist or existed, even if all we can do is watch their version of EastEnders.

Maybe gravitational waves used to modulate transmissions might give a more real time veiw of the universe, admittedley that would essentially involve plucking the fabric of space-time like a guitar string.

I like the idea of using quantum entaglement as a method of communicating real-time over vast distances, but unless the aliens are going to teleport an entangled particle directly into an ion trap we're unlikely to have a conversation with an alien civilisation, or learn anything of their present status

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