How old is the universe again?
-
- Posts: 297
- Joined: October 2nd, 2022, 1:19 am
How old is the universe again?
https://aip.scitation.org/doi/10.1063/9780735421141_001
A light-year is equivalent to about 9.46 trillion killometres.
https://en.wikipedia.org/wiki/Light-year
so the average distance between galaxies is 1 million times 9.46 trillion miles. Then there are 100 billion galaxies. So if we drew a virtual line from anywhere e.g. planet earth, and extend it in any direction, there would be a massively further distance across the galaxies along that line, e.g. than that the universe is thought to be! - 13.7 billion years old.
So how old is the universe?
If we are looking at the age of the oldest light we can currently see, such to get the number 13.7, then that is surely a faculty of light. We can only look so far back into light before it becomes unpassable and uniform [background radiation].
-
- Posts: 219
- Joined: March 27th, 2011, 8:03 am
Re: How old is the universe again?
If there are 100bn galaxies, how many of those would fall on a straight line from the Earth in any direction, assuming an isotropic universe? Only a vanishingly small percentage. I suspect that percentage would add up to about 13.7bn years.
-
- Posts: 297
- Joined: October 2nd, 2022, 1:19 am
Re: How old is the universe again?
https://www.physicsforums.com/threads/c ... s.1046639/
i am a tad suspicious of science though, they closed my 'size of universe' thread, because i questioned the notion that science believes there is nothing outside of universe. i also question relativity but there is no point in placing my postulations on that forum lol.
-
- Posts: 219
- Joined: March 27th, 2011, 8:03 am
Re: How old is the universe again?
-
- Posts: 219
- Joined: March 27th, 2011, 8:03 am
Re: How old is the universe again?
-
- Posts: 297
- Joined: October 2nd, 2022, 1:19 am
Re: How old is the universe again?
Also, I don’t see how it could have infinite age as singularity prior to expansion. It could be a very long time but you cannot build up to an infinity.
Here’s one for relativity:
over at physics forums, I argued; if tow cars drive in the opposite direction at 100 mph, their combined speed would be 200, and yet a photon is always moving at the speed of light. Their argument to that was that the cars are effectively on their own roads and there is no combined speed.
I didn’t press the argument because I didn’t want to get banned. However, what if the two cars are attached by a stretch of elastic?
Also time travel cannot be possible, because I could go forwards in time and shoot myself so that I couldn’t travel in time. So time does not change! Nothing can move forwards nor backwards in time. Equally if I had a tachyon gun which fired tachyons in an arc [or right across the universe to come back to its own point}, then they would double up on themselves [make for an unlimited power station lol]. Yet energy is conserved, ergo you cannot overlap them so.
While we are at it; is space curved or does light just bend around objects like suns and planets, in much the same way as it curves through a magnifying glass?
2023/2024 Philosophy Books of the Month
Mark Victor Hansen, Relentless: Wisdom Behind the Incomparable Chicken Soup for the Soul
by Mitzi Perdue
February 2023
Rediscovering the Wisdom of Human Nature: How Civilization Destroys Happiness
by Chet Shupe
March 2023