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Pillars of creation obliterated

  • TrevorDurity
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Pillars of creation obliterated was created by TrevorDurity

Interesting article on NewScientist.com.

They think that the famous "pillars of creation" in the Eagle Nebula have been obliterated by a previously unknown supernova.

We still have 1000 years to image it before the light from the event reaches us though :wink:

Not all the scientists are convinced, however.

space.newscientist.com/article/dn10925-p...ed-by-supernova.html

Trev
16 years 2 weeks ago #39017

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Replied by dave_lillis on topic Re: Pillars of creation obliterated

So they are 7000ly away, the supernova happened 6000 years ago, so we wont see the effect for 1000 years, cool or what !!
I wonder how fast will the pillars be disintegrated, will it be over a few months or a few years, not that we'll be around to see it :)
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16 years 2 weeks ago #39027

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Replied by JohnMurphy on topic Re: Pillars of creation obliterated

Not all the scientists are convinced, however.


I'm in the sceptics camp. The X-radiation from this region should be a lot more noticeable to fit in with the suggested scenario. Until more data is forthcoming or if it already exists then made available, then I'm inclined to reserve judgement. Still should be a fascinating area to keep an eye on. If it does turn out to be an expanding shockwave from a SN then it could present observable results anytime in the future, we may not necessarily have to wait 1000 years to see evidence. Still I'm not staying up that late, someone else can switch off the lights.
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16 years 2 weeks ago #39028

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Replied by pmgisme on topic Re: Pillars of creation obliterated

I read somewhere that there are people alive today who will live to be 1000 years old,such is the pace of medical research.

I am looking forward to seeing them disintegrate when I reach 1000.

Peter.
16 years 2 weeks ago #39340

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Replied by Frank Ryan on topic Re: Pillars of creation obliterated


They think that the famous "pillars of creation" in the Eagle Nebula have been obliterated by a previously unknown supernova.



If you believe in a big bang big crunch type universe(s) then maybe:
insted of the end bieng 'nigh' the end happend millions of years ago?
we just cant see the effects yet.

How far 'back in time' did Hubble see in that famous deep space shot?
and how the hell would we know what to look for anyway?
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16 years 2 weeks ago #39342

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Replied by pmgisme on topic Re: Pillars of creation obliterated

The speed of light equals the speed of time.
16 years 2 weeks ago #39347

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Replied by JohnMurphy on topic Re: Pillars of creation obliterated

The speed of light equals the speed of time.


Thats one way of putting it, what you really mean is time = rate of change. What is time? Is it just the rate of change? Change in velocity, molecular disintegration, etc. etc. ? If theres no change does time stand still? Tick tock, tick tock..................?
For instance in a black hole at the singularity where the curvature of spacetime is extreme, time ceases to exist (it dilates infinately) which means there is no change. However it could take an eternity to reach the singularity as time progressively dilates. It therfore is obvious that time is relative to the mass that is present in one's locale (remember that space and time are inseperable), and mass affects the curvature (warping) of spacetime. Time is not fixed, one of the only fixtures we can depend on is the speed of light, therefore the speed of light (a constant) does not equal the speed of time (a variable depending on the mass and distance (inverse squared) from). Hope that clarifies it. :lol:

Time is an illusion that we use to make sense of what we see, without a change (in anything) we cannot make any sense of time.

What has happened is happening and will happen.............. :wink:
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16 years 5 days ago #39996

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Replied by pmgisme on topic Re: Pillars of creation obliterated

It's the "Twin Paradox"John.
If you accelerate one twin towards the speed of light they will both age at different rates.
At the speed of light the clock stops altogether.
A photon is frozen in time.
If the sun disappeared now we would feel it's gravity for eight minutes more.

Peter.
16 years 4 days ago #39998

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Replied by JohnMurphy on topic Re: Pillars of creation obliterated

Peter,

What I said still stands. The speed of light is a fixed constant. Time is variable depending on your reference frame. Therefore the speed of light and "speed of time" (whatever that means) cannot equal.
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16 years 3 days ago #40046

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Replied by pmgisme on topic Re: Pillars of creation obliterated

Of Course.
Mass varys as well as time.
As does length.(Fitzgerald-Lorentz Contraction)
(George FitzGerald was Irish incidentally.)
Strange world.
Richard Feynmann reckoned that a Positron is an Electron going backwards in time! (In his book QED.)
Mind boggling stuff indeed.

Peter.
16 years 2 days ago #40069

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Replied by JohnMurphy on topic Re: Pillars of creation obliterated

Richard Feynmann reckoned that a Positron is an Electron going backwards in time!


As a matter of fact all antiparticles can be said to be their respective particles going backwards in time. Feynman was genius personified, I highly recommend James Gleick's book Genius: The life and science of Richard Feynman.
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16 years 1 day ago #40155

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Replied by fguihen on topic Re: Pillars of creation obliterated

so it happened 70000 years ago. what if you invented a machine that allowed you to travel at 70001 - 750000 times the speed of light, would you reach the pillars before the event happened, if you left today?
"Success is the happy feeling you get between the time you do something and the time you tell a woman what you did." Dilbert.
16 years 1 day ago #40158

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Replied by pmgisme on topic Re: Pillars of creation obliterated

"Tachyons" are proposed particles which travel faster than light and backwards in time.

A vehicle which travels at 750,000 times the speed of light Fguihen?
Sure that's too simple altogether!

Can't you think of something a bit more ambitious Fguihen?
16 years 1 day ago #40179

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Replied by ciderman on topic Re: Pillars of creation obliterated

The whole thing just confuses the mind, our narrow belief in simultaneous events, astronomically seen to be divided by the unbreachable speed of light, unless the particles are entangled and can communicate information instantly, then it all gets interesting again.
Spooky action at a distance.
And the whole geometry of the universe could mean that if you could travel far and fast enough not only could you arrive back at your starting point but also have your left and right reversed, all points translated into a perfect mirror image of the old you!
And I concur with the 1000 year old people thing, although it will result in some creative social upheavals, hmm, make long term investments intriguing. Although probably only the rich will aford them and you'll end up with some scifi dystopia with flying cars, facist police and talking kangaroos!
What do you do if you see a spaceman?

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15 years 9 months ago #43918

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Replied by fguihen on topic Re: Pillars of creation obliterated

ambitious!! indeed, but there are many very smart people out there so im hoping some of those will do it. but forget about the complete absurdity of my statement for a minute. if you could travel that speed, could you , theoritically get back to before the event happened? Stephen hawking talks some on this in his book. i think his example is two planets, four light years apart, there is an event happening simultaneously on each planet. if they have telescopes huge enough to allow them to see the event on the other planet, they will have to wait 4 years to see the event, but if one planet had a ship that could travel the distance to the other planet in lets say 3 years, and leaves right after their event concludes, they could get to teh other planet before that event begins. i think thats how he phrased it however il have to look again. this stuff makes my head hurt.
"Success is the happy feeling you get between the time you do something and the time you tell a woman what you did." Dilbert.
15 years 9 months ago #44873

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