Monday, March 4, 2013

Accelerate Expansion of Universe


Accelerated Universal Expansion without need for Dark Energy


“In physical cosmology and astronomy, dark energy is a hypothetical form of energy that permeates all of space and tends to accelerate the expansion of the universe. Dark energy is the most accepted hypothesis to explain observations since the 1990s that indicate that the universe is expanding at an accelerating rate. In the standard model of cosmology, dark energy currently accounts for 73% of the total mass–energy of the universe.”
The above is a term coined to explain the “expansion of universe at in accelerating rate”, reason cannot be determined if universe expanded out of big bang, if it did, it should be slowing down but not only that it’s not slowing but actually speeding up and things are moving away faster and faster.
In case universe came out of big bang and expanded, it should slow down as energy that started the bang will die out and things will slow down, this explanation would work perfectly if we assume every bit of matter was used up in explosion that made the big bang possible. In this case we cannot explain why universe isn’t slowing down, but if the picture is changed a little and seen as lots of matter remained behind after big bang, the whole assumption changes.

Example:
Imagine a bubble formed on surface of water and it pops, if things are slowed down we would see bubble popping and small droplets flying off in different directions eventually going to attracted back to water surface but let us take 3 points in this pop for example.
Fastest droplet
Slowest droplet
Average Speed Droplet
Fastest droplet is going to travel the longest distance away from water surface, it will reach the maximum point, stop and move back when gravity acting on it has slowed it down to speed 0.
Slowest droplet isn’t going to last much time, just after it goes up, it will slow down to halt and move back even before fastest droplet has reached half height.
While average speed droplet is in the middle, started fast and has almost stopped moving.

Now assuming we are on average droplet while it has stopped moving or slowly moving back, we see that fastest droplet is moving away faster and faster, distance is increasing so we accelerated rates, the slowest droplet is moving back going away from us, we see it moving away too at an accelerated speeds, the distance between us is increasing.
This is the simplest explanation that can be given for expansion of universe at an accelerated rate.



No comments:

Post a Comment