Comment by imranq
Comment by imranq 2 months ago
The jets are 23 million light years in length! That's 140 milky way galaxies laid out -- these are sizes I can't even begin to comprehend
Comment by imranq 2 months ago
The jets are 23 million light years in length! That's 140 milky way galaxies laid out -- these are sizes I can't even begin to comprehend
> it makes me wonder if there isn’t an upper limit to energy density
Yes, in a sense. The point at which the energy bends space-time into a black hole.
Actually, in theory there is one place denser but our models show it can never happen.
The moment right after the big bang. As energy can never be created nor destroyed, all the energy in the universe was practically in one point in space-time a femtosecond after the big bang.
This is a misunderstanding. All the energy in our « observable » universe was compressed in that small size. We do not have any estimates of the size of the actual universe now, nor at a time shortly after Big Bang. For all we know, the universe might be infinite, both now and back then.
My layman understanding is that we don't have the theories or math to try and understand this so it's just a black box that we pretend to understand
Imagine a one meter long jet. Congratulations, you've begun to comprehend it and now are at 1/(2.176 × 1023) of the total length.
Imagine the amount of energy required to create a jet that large! The scales are so big, it makes me wonder if there isn’t an upper limit to energy density. How much energy can be in one spot before you inadvertently create a Big Bang?