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Powerful Explosion


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Well what was it you where getting at?

What did you mean by it’s a joke?




If we’re seeing it just now. How much longer does the shockwave hit us?


And it’s expanding


So did this just create a crater in the hot gas? Or did it blow a hole in the galaxy itself, With suns and star systems being caught in the blast?


If so this could be the largest extinction event ever recorded


Explosion - note there is a wavefront and it is expanding into pre-existing space:




Expansion - The image represents the 2D curved surface of a sphere that is expanding. Space is being created between the moving objects which represent photons and the static yellow dots which represent galaxies . Picture that separation as universal expansion and note that it is not expanding into pre-existing space but is actually created between the galaxies; it is necessary to ignore the area outside the sphere to get the concept:



Edited by Timboo
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A shock wave travels at the speed of sound, much less than the speed of light.

Ok so how long before the shockwave hits us from this


1. If the explosion was that big and took up so much space does that mean all the planets and stars in the vicinity of the burst were destroyed?


2. The article mentions that the explosion took place over millions of years but has stopped now, how do they know it stopped. Can they still see that area?


thank you

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That's because the light that reached us tells us about the event 400 billion years ago, it is telling us nothing else.

How do they know the explosion is over, does that area still exist, or is it all empty space now?


So this is not something that would reach earth in our lifetimes then?

Edited by Timboo
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It's roughly 400 billion light years away, so I wouldn't be concerned about any shock waves. Yes they can lay waste to surrounding systems, but this one probably won't affect us for a long time even if it will, sound waves can be absorbed by interstellar objects.

So does that mean anything in the way of the moving shockwave is getting destroyed even now?

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