|
| Kushna Mufeed
@alexishungry, Can you back up this claim? As far as I know, this is completely false. Regardless, I would imagine the limiting property of the speed of light would still exist with or without the presence of photons, since it is so key to the theory of relativity.
|
|
| Alex
@kushna According to most scientists, a period existed after the big bang that was completely dark (the dark ages), BUT… you do bring up a good point. Because Einstein’s relativity theory states that time is warped with increased speed in order to keep light’s speed constant in all relative situations, why would this still apply without light around?
|
|
| Alex
Isn’t it just as likely though, that the big bang happened with such tremendous force that it covered/created A LOT of space/time virtually in a blink of an eye. The entirety of the dark ages could’ve really, relatively happened instantaneously. Did the big bang need time?
|
|
| Kushna Mufeed
@alexishungry, I do know that the early universe was opaque and not transparent as it is now. However, that doesn’t mean that photons still couldn’t exist within it. Just that they would be emitted and absorbed quickly.
I looked up the Dark Ages and according to Wikipedia, “There is light but not light we could observe through telescopes.” https://en.wikipedia.org/wiki/Chronology_of_the_universe#Dark_ages
@hollowinfinity, If you check out the link above, you’ll see that many stages of the early universe happened in extremely short amounts of times. So while not instantaneous, the initial expansion of the universe happened in a relatively short amount of time. However, by the Dark Ages lasted quite some time, “between 150 million to 800 million years after the Big Bang.”
|
|
| Alex
This is what gets me though. Time/space is relative. If we lived a billion light years away, we might think the Universe is younger than we thought, and if we lived later than now, all that light would be quite far away to detect, and we might as well assume the universe is younger too (or older)
We measure duration mostly from light, so in a sense we can never be sure if our own sun uses time to its advantage. This is what confuses me about people saying, “Oh this star will supernova in a couple million years.” How do we know this, when we are confined to observation from this rock?
|
|
| John
“Oh this star will supernova in a couple million years.” How do we know this, when we are confined to observation from this rock?”
THISSS!!!!!
AND
TIME IS NOW!
|
Anonymous
