Posted on 01/10/2024 6:24:18 AM PST by gop4lyf
If the speed of light is constant, and the "Big Bang"(according to Google) happened 13.8 billion years ago, then how is the size of the known universe (according to Google) 93 billion light years across? Shouldn't it at most be about 28 billion light years across?
The speed limit was higher back then. No cops around.
I’ve actually asked that question myself although I didn’t look up the size of the ‘known universe’. It seems to big based on standard physics, unless you get a little meta-physical and utilize Einstein’s concepts of relativity where even light is relative and can even be bent by gravity, but what if the speed of light was relative to the expansion of the universe and not a pure constant as if it would be the same if there was no expansion. In other words, the universe is expanding faster than they suggest it is and you can’t calculate it accurately because of the disparity of perception/measurement of light as your method.
It shouldn’t, based on their figures.
I did figure out that, if the universe was condensed to a cube where it had the density of osmium, the most dense element on the periodic table, it would be 9.404 light years across.
You can check my figures to see if I missed anything.
The amount of mass that is thought to be in the universe is 1.59486x10^55 kg. This works out to be 1.59486x10^58 g.
The density of osmium is 22.6 g/cm^3, which if you divide the initial mass by the density, you would end up with a cube 7.056902654867x10^56 cm^3. If you cube root this, you would end up with 8.903034210977x10^18 cm on each side, which works out to be 8.903034210977x10^13 km, on each side.
The speed of light is 300,000km/sec. It would take 2.967678057506x10^8 seconds to traverse the distance. This works out to be 4.946130095844x10^6 light minutes. This works out to be 8.2435015974x10^4 light hours. This works out to be 3.434812566558 x10^3 light days. Finally, the distance equals approximately 9.404 light years.
The universe, when condensed to the same density as osmium would be a cube with a side as long as 9.404 light years.
The speed ogylightnus 186000 mps. But the expansion of the universe is not constricted by this doeed
Everything is bigger in Texas!
The expansion of the universe is not regulated by the speed of light. Travel within the universe, is.
just remember that you’re standing on a planet that’s evolving, and revolving at 900 mph.
it’s orbiting at 19 miles per second, so it’s reckoned, a sun that is the source of all our power.
I understand that, but there are objects thatare at the far reaches of the universe. How did they get there faster than the speed of light?
Damn. This guy did the math.
It’s not just the speed of the particles expanding space, but the expansion of the “nothingness” between them. The expansion of space has nothing to do with moving objects, and is not limited by the velocity of light. Also, the Universe expands at a rate, not a speed.
There are decades of books written on this, me collapsing it into a soundbite is beyond my meager monkey brain.
The universe itself is expanding faster than the speed of light simply because there is no restriction within the universe preventing it from doing so. Who knows what speed restrictions there are in the brane that our universe exists within? Within the universe itself, light is constrained to traveling at 300KPS which is why we can’t see the entire universe because there hasn’t been enough time to see the light from the far ends of the universe.
The latest theory is the idea that shortly after the big band, there was a period of “inflation”of space itself.
Supposedly, due to this theory extension, space itself continues to expand and enlarge — ALL SPACE, EVRYWHERE.
Since light travels in space, such an expansion would also “stretch” the wavelength of emitted light as it traveled, causing the so-called “red-shift, which says that things further away are traveling aways faster the further away they are.
Space, itself, isn’t just empty, but has properties — goes the theory extansion.
*300,000KPS
If the Universe is 94 billion light years across, what is on the outside?
The size of the universe is not a “yardstick” concept. What would happen if somehow you gotto the very edge and ventured beyond? All these theories about the origin, age and size of the universe are theoretical , unproven concepts that are the philosophical , even mystical musings of agnostic men. Human beings are the only species with a brain capable of mysticism. The story of civilization is how those mystical thoughts have been expressed and the insights and values that evolved from them.
The Universe was smaller back then..................
The speed of light is constant - time is not.
Reminds me of a song from one of the Monty Python movies!
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.