How many quarks in observable universe?

Answer 1

We as humans currently do not know for sure what the exact size of the universe is due to technological limitations, and the universe is likely infinite in space. However, we do know how far we can see into the universe. From our vantage point on Earth, we can observe objects up to about 46 billion light years away, proving that the universe is in fact quite large!

As mentioned above we do not know really how big the Universe is. However, in recent years, using methods not even conceived of until recently, it is fairly certain that the time since the Big Bang which is the beginning of the Universe as we know it is very close to 13.7 billion years. This has come from the WMAP satellite which measured the Microwave Background Radiation which is the remnant of the original energy release from that incredible explosive beginning of the Universe. Now that would normally mean that the Universe should not be more then 13.7 billion light years in any direction. This seems to be what we are seeing when we look out into the very limits of the Universe using our best telescopes in space and on the ground.

There is a possibility that the Universe could be much bigger then that as the Big Bang theory requires a brief period of "Inflation" were the expanding space of the Universe had to travel much faster then the speed of light briefly in order to make all the observed consequences of the Big Bang theory come to pass. This could expand the whole Universe well beyond the limits of the time involved. So far this has not proven to be the case. Yet space can expand faster then the speed of light. Remember travel in space is managed by the "Higgs Field" which limits travel to the speed of light. Whereas space itself can expand faster then the speed of light as there is no restriction in how fast space itself can expand, it just requires an enormous amount of energy which was available for only a short time immediately after the Big Bang occurred. That means within quintillionth's of a second.

Answer 2

The Observable Universe is 93,000,000,000 light years (28,000,000,000Mpc)

The actual Universe is 164,000,000,000 light years (50,000,000,000Mpc)

Mpc stands for Mega parcecs

1 parcec is 3.32 light years

Answer 3

The observable volume of the universe is spherical

with a radius of around 14 billion light years.

Comment :

The answer depends a bit on definitions. Wikipedia's article called

"Observable universe" seems quite comprehensive.

I'm inclined to go with the answer : "about 46 billion light years" as the radius of the observable universe, but I'm not an expert.

Answer 4

That is not known. The observable Universe has a radius of 46 billion light-years; it is believed that the entire Universe is, at the very least, several times this size.

Answer 5

well my calculations got me to 4.2912121580307595ex45 quarks in the obsevable universe.