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.
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.
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.
Climate change, of course. (Someone had to say it)
If you could go to the very edge of the universe, what’s on the other side that it’s expanding in to?
I recommend books by Brian Greene, and, Paul Halpern. They both have books on this topic.
What is really mind boggling is that the signs all point to things keeping going until the heat death of the universe at more that 1 Trillion years in the future.
THEN Quantum Mechanics kicks in and who knows WHAT will happen.
This is addressed in virtually every physics course dealing with the big bang and the rapid expansion (inflationary period) that immediately followed. It takes a bit of reading, and some thinking. There are still many questions on the current theory - we’ve got a lot of work to do there. It’s far better to devote time to the N lies (where N is a very large number) dealing with climate change, CO2, etc. Going the woke route on climate change WILL lead to disaster. Not even close to kidding.
Might I recommend some visual aid, indeed there are more questions than answers as you come to realize that the more you know the more you don’t know.
Go to youtube and ‘favorite’ (that way searches pop up automatically) Kosmo, SEA, (especially) and Astrum for starters - there are many others that are excellent also too numerous to mention. If you don’t have a big screen TV you’re gonna want one!
Also do a search for the JWST (James Webb Space Telescope) and see some of the new findings, staggering discoveries that are turning astronomy and astrophysics on their heads.