- #1
YoungDreamer
- 61
- 0
I am wondering about the size of the universe. I have read that we can only "see" 13.7 billion light years away in all directions and that we are in the center.
To my mind this presents a problem. The problem is what are the odds that we are in the center of the universe?
Then again even with astronomical odds...
But I have always assumed since I was younger that the universe went on forever and our observable universe was caused by a big bang, and that other big bangs could be going on septillions of light years away.
Is that a current theory or am I just dreaming.
And second.
Could it be possible that our technology is only capable of seeing exactly 13.7 billion light years away for whatever reason. Not because that is where the CMB is found, but assume that the matter in our universe goes on for 20 billion light years and if our technology could only see 13.7 billion light years away it would sweep around looking that far back in all direction and we would appear to be at the center. I don't know if I have explained my question well enough, I hope that you will get my point.
One last question.
What would happen if we took a spacecraft to the edge of our observable universe and just kept going.(I know we can't do that.) Would the gravity of the entire universe stop us from moving further. Or would we loop around or just go on into complete darkness?
Thank You
To my mind this presents a problem. The problem is what are the odds that we are in the center of the universe?
Then again even with astronomical odds...
But I have always assumed since I was younger that the universe went on forever and our observable universe was caused by a big bang, and that other big bangs could be going on septillions of light years away.
Is that a current theory or am I just dreaming.
And second.
Could it be possible that our technology is only capable of seeing exactly 13.7 billion light years away for whatever reason. Not because that is where the CMB is found, but assume that the matter in our universe goes on for 20 billion light years and if our technology could only see 13.7 billion light years away it would sweep around looking that far back in all direction and we would appear to be at the center. I don't know if I have explained my question well enough, I hope that you will get my point.
One last question.
What would happen if we took a spacecraft to the edge of our observable universe and just kept going.(I know we can't do that.) Would the gravity of the entire universe stop us from moving further. Or would we loop around or just go on into complete darkness?
Thank You