Shelley Wright, a former postdoctoral scientist in the UC Berkeley Astronomy Department, and now faculty at the Dunlap Institute for Astronomy & Astrophysics at the University of Toronto, visited Berkeley SETI Research Center recently to talk about infrared and optical SETI, and how ET might be using huge lasers to communicate. Watch our four minute video interview at https://youtu.be/JoOkXhNUQO4

Loving the videos and engagement with the community, sir. Please keep it up! I'll have to watch the video when I get home from work later today.

Lasers would be too slow since the transmission speed would still be limited by the speed of light. Also, the beam would be subject to attenuation should it pass through planetary atmospheres and warping as it passed near large bodies with high orders of gravity.

It's more likely that they have figured out how to use gravity waves as a carrier and are imposing some form of modulation we have yet to detect.

Just my opinion.

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Lasers would be too slow since the transmission speed would still be limited by the speed of light. Also, the beam would be subject to attenuation should it pass through planetary atmospheres and warping as it passed near large bodies with high orders of gravity.

It's more likely that they have figured out how to use gravity waves as a carrier and are imposing some form of modulation we have yet to detect.

Just my opinion.

Unless I am mistaken. it appears gravity travels at the speed of light. Entanglement seems to be the best solution for Faster Than Light Speed although that is not supposed to carry any information.

It appears we are cavemen (and Caveladies) trying to figure out how a radio works. Without the effort we will never unravel the mystery.

Bob
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Sometimes I wonder, what happened to all the people I gave directions to?
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SETI@home classic workunits 4,321
SETI@home classic CPU time 22,169 hours

Work was being done gravity wave detection.

You can still hunt for gravitational (not gravity) waves at Einstein@home and Albert@home.
Tullio

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Hello.
We must ask Captain James T. Kirk from "Enterprise" as they talked at great distances in space and all the business then. :))

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Горы, нет ничего лучше гор. :)
Mountains, there is nothing better than mountains. :)
Life is good when you live without haste! ))

Lasers would be too slow since the transmission speed would still be limited by the speed of light. Also, the beam would be subject to attenuation should it pass through planetary atmospheres and warping as it passed near large bodies with high orders of gravity.

It's more likely that they have figured out how to use gravity waves as a carrier and are imposing some form of modulation we have yet to detect.

Just my opinion.

Unless I am mistaken. it appears gravity travels at the speed of light. Entanglement seems to be the best solution for Faster Than Light Speed although that is not supposed to carry any information.

It appears we are cavemen (and Caveladies) trying to figure out how a radio works. Without the effort we will never unravel the mystery.

Bob
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Sig File to be inserted here

As far as I know, there is very little information about the way and speed in which gravitational waves are propagated. This would be especially true if what we perceive as gravity is a "leakage" into our reality from a parallel universe.

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Lasers would be too slow since the transmission speed would still be limited by the speed of light. Also, the beam would be subject to attenuation should it pass through planetary atmospheres and warping as it passed near large bodies with high orders of gravity.

It's more likely that they have figured out how to use gravity waves as a carrier and are imposing some form of modulation we have yet to detect.

Just my opinion.

We haven't found anything that can travel faster than the speed of light yet, so why wouldn't lasers or radio waves still be the best means of communication?

Yeh, Right - let's see now,

An intelligent species has a high probability of needing an atmosphere - I've never seen any model outside of SpeFic fantasy (for instance S&J Robinson's Stardance trilogy - nice, but, as I said, fiction).

While a species as intelligent as ours may be exploring its local solar system, it has too many Senators from Wisconsin - like the guy who took the seat formerly held by Joseph McCarthy. Bill Proxmire, cut the budget for NASA's proposed 100% reusable return as glider lift liquid hydrogen/oxygen lift vehicle carrying a similarly-fueled reusable "space shuttle" returning the same way in half, ordering NASA to build the STS on half its proposed bare-bones budget.

(Proxmire, told this former newspaperman that he loved the fact everybody concerned with scientific research used his name as a verb of maladiction, went to his grave, damned cheerful that his way was paved by the ashes of astronauts)

They may have out-of-atmosphere telescopes lasting a little longer than their lunar exploration phase, but, all-in-all, they're a damned stupid bunch.

And any atmosphere will scatter optical communications worse than "empty space" phenomena like the still-unclassified "dark matter". So, unless your society can harness the power of a star, and point it in the right direction, the ABSOLUTE right direction, fuggetaboutit.

If you can harness the power of a star to look for intelligent life, you would be better off developing a method of modulating its amplitude, sending out a signal to any species with optical (or in this case almost any EMF) receptors for sensing its environment, and therefore "looking" at stars. FM would carry further, but it could lead to the creation of a "pulsing expansion-contraction universe" theory based on the rapid appearance of what could be a radical Doppler shift.

A directional laser has to be aimed at the spefcific place the target will be able to see it in n lightyears, and we're talking planet for a highly columnated polarized beam, which could be highly destructive for anybody who happens to break it far closer to its source than itss intended target.

This is what post-doc researchers are turning out these days?

That's just problem #1.

Lasers would be too slow since the transmission speed would still be limited by the speed of light. Also, the beam would be subject to attenuation should it pass through planetary atmospheres and warping as it passed near large bodies with high orders of gravity.

It's more likely that they have figured out how to use gravity waves as a carrier and are imposing some form of modulation we have yet to detect.

Just my opinion.

What makes you think gravity travels any faster than the speed of light?
Not an expert in physics, but it sure sounds like an heresy.
I'm pretty sure I've read about this, though. Wasn't the discovery of the concept of gravitational wave and the idea that they do not travel at infinite speed one of the big achievements of Albert Einstein?