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Pondering Gravitational Waves
Centauri Dreams ^ | 2/11/16 | Paul Gilster

Posted on 02/13/2016 5:52:10 AM PST by LibWhacker

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1 posted on 02/13/2016 5:52:10 AM PST by LibWhacker
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To: LibWhacker

So maybe we can’t travel in time but could we conceivably see backwards (maybe even forward) in time?


2 posted on 02/13/2016 6:12:33 AM PST by airborne
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To: airborne

It’s important to distinguish science from science fiction.


3 posted on 02/13/2016 6:20:01 AM PST by maro (what did the President know and when did he know it?)
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To: LibWhacker

Outstanding! Thanks for posting.


4 posted on 02/13/2016 6:26:10 AM PST by sima_yi ( Reporting live from the far North)
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To: airborne

I don’t know about forward in time, but like he says, this will give us a way to look back at the first moments of creation, which no form of electromagnetic radiation could possibly achieve.

I think the most exciting thing, which he kind of downplays actually, is that EVERY time astronomers open a new window on the universe, they discover new, unexpected, mind-blowing things going on out there. What will it be this time? We can’t even guess.


5 posted on 02/13/2016 6:26:48 AM PST by LibWhacker
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To: LibWhacker

Now we know that the first gravitational waves were detected on September 14, 2015 at 5:51 a.m. EDT (09:51 UTC) at both LIGO sites.

...

I thought I felt a disturbance in the Force.

What I found interesting is that Advanced LIGO saw this gravitational wave almost as soon as observations began with the new and improved instrument. That should indicate that there will be many more announcements of gravitational waves to come as they are verified. Before it’s finished LIGO should have about three times more sensitivity.


6 posted on 02/13/2016 6:42:55 AM PST by Moonman62 (The US has become a government with a country, rather than a country with a government.)
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To: LibWhacker


7 posted on 02/13/2016 6:46:38 AM PST by JoeProBono (SOME IMAGES MAY BE DISTURBING ’VIEWER DISCRETION IS ADVISED;-{)
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To: JoeProBono
I saw a really good one from MIT, I think, a week ago. Can't find it now to save my life.


8 posted on 02/13/2016 6:55:06 AM PST by LibWhacker
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To: Moonman62

I turned 75 that day. It was certainly a disturbance in the Force.


9 posted on 02/13/2016 6:56:04 AM PST by Louis Foxwell (Stop Islam and save the world.)
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To: LibWhacker
At optical wavelengths,,,we can see the universe as a calm place, like looking at the ocean on a quiet day. But on September 14, 2015, all that changed. Now we see an ocean of crashing waves, as black holes create a violent storm in the fabric of space and time.

This is definitely one of the most exciting discoveries in my lifetime.

Already it has caused a cosmic shift in my perceptions of reality and my life.

10 posted on 02/13/2016 7:03:12 AM PST by Savage Beast (We see an ocean of crashing waves, as black holes create a violent storm in the fabric of space-time)
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To: LibWhacker

I’m fairly scientific, and I am still failing to see one real practical application of this discovery.


11 posted on 02/13/2016 7:15:47 AM PST by bolobaby
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To: LibWhacker

This does not mean that there will be travel in time.


12 posted on 02/13/2016 7:25:13 AM PST by I want the USA back (The further a society drifts from the truth, the more it will hate those who speak it. Orwell.)
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To: airborne
You are looking far back in time whenever you peer at the night sky. Then again, anything you can observe has already happened. Seeing forward? That's Hari Seldon's probabilistic territory, like watching two trains approach each other on the same set of rails or watching the threads break on the bomber's coat sleeve in Hitchcock's Saboteur.
13 posted on 02/13/2016 7:28:08 AM PST by katana (Just my opinion)
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To: bolobaby

I understand scientifics but not deeply.
Did I just read here that gravity could be nullified (to a certain extent) by high frequency electric current on a metal mesh?

I think that’s kind of a big deal.


14 posted on 02/13/2016 7:29:38 AM PST by Samurai_Jack (War is cruelty, there is no use trying to reform it; the crueler it is, the sooner it will be over.)
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To: bolobaby

Go back and read that section called “Toward a New Astronomy.” It sort of explains what to expect.

But I can sympathize, because at first I was exactly where you are. I mean, it’s not as if we’re going to be able to do any kind of spectroscopy with gravitational waves. And without something like that, gravitational wave “telescopes” are going to be poor cousins to optical, radio, etc. So what information are we going to get? Oh, two things collided over there a billion years ago. Whoopee. :-)

But I’m slowly coming around... This IS exciting.


15 posted on 02/13/2016 7:38:48 AM PST by LibWhacker
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To: Samurai_Jack

No, Gilster was just citing an early sci-fi writer, Hugo Gernsback. But there will surely be other things (perhaps not as spectacular as gravity shielding, perhaps more) that come out of this new branch of astronomy.


16 posted on 02/13/2016 7:44:55 AM PST by LibWhacker
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To: LibWhacker

And still we hear the echoes of God’s arc through the heavens.


17 posted on 02/13/2016 7:56:24 AM PST by WMarshal (Who in the Republican Party will be brave enough to name Obama a traitor?)
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To: LibWhacker

What I find totally awe inspiring is the instrument itself - that it’s able to detect changes in length of less than one thousandth the diameter of a proton amid all the hundreds of background noises.

Truly mind boggling.


18 posted on 02/13/2016 9:42:09 AM PST by aquila48
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To: Savage Beast

Einstein daydreamed about stuff like this and look where it got him.


19 posted on 02/13/2016 9:51:56 AM PST by Delta 21 (Patiently waiting for the jack booted kick at my door.)
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To: LibWhacker

They dont know exactly where these 2 invisible black holes were but know they collided an immeasurably long time ago but with measurable energy outputs? ..and know the wave they detected came from this collision?

School of hard knocks, here. I understand the instrumentation, the fact that gravity waves have always been around, split the laser beam, yadda, yadda, ..Its just like saying that “that wave on this beach was caused by a Chinaman throwing a rock into the sea. But that one over there wasnt.

Im just lookin to understand it all.

Hopefully just bad writing.
Probly just me.


20 posted on 02/13/2016 10:13:38 AM PST by Delta 21 (Patiently waiting for the jack booted kick at my door.)
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