Teempakguy:
ah yes, these are the problems that plague us.

so annoying, sure. but eventually, they will be resolved.

Teempakguy:
ah yes, these are the problems that plague us.

so annoying, sure. but eventually, they will be resolved.

mrphysics:

perhaps by modification of the theory. I think a new one is coming out that will give answers to these challenges of the big bang. I just pray, it does not create more problems on its own

johnydon22:
The horizon and flatness problem were solved by the cosmic inflation theory.

Horizon problem:
Answer: Since this problem suggests that light hasn't had enough time to travel through out the sides of the universe, how come they have uniformed temperature.

The inflation theory traces this to the Point when the universe was just a small point of infinite energy.

There were two stages of cosmic expansion.. The first rapid inflation took 10^-28 seconds from which a rapid inflation occurred from that too small a point of inflation..

Second expansion has taken 13.5billion years as asserted by conventional big bang theory.

So going by the first expansion Rapid inflation, the universe was at a very small point that every aspect of it had enough time to interact in order to achieve uniformed temperature.

this weirdly fast inflation was possible through repulsive gravity... This mechanism suggests gravity can provide a push not just pull.

So at that tiny size of the young universe before the rapid inflation, every atom had enough time to interact to achieve uniformed energy density and temperature.


Flatness problem:
Answer: Conventional big bang theory suggests the more the universe expands the less dense it gets.

the inflation theory suggests that space/time can be forced by inflation to expand while the density of the universe remains constant and as such maintains a critical density.

theory of relativity shows space as a geometrical fabric, so as the universe expands in three dimensional mode the fabrics gets flatter forcing the universe towards critical density.

and thus keeps expanding forever at a very slow rate until time reaches infinity ...


Structural problem:
Well i don't think the big bang asserts an explosion or bang, people often mistake the rapid inflation to mean explosion mostly because of it's name..

The conventional big bang doesn't account for what happened before the inflation of the singularity, it only traces back the expansion and inflation of the universe to an infinite point. (singularity)

Different sizes in objects can be attributed to gravitational signature resulting from differences in Mass.


What we know is that as it stands we are far from getting 5% of what is there to know about the universe, and so as it stands we should keep our heads high and employ consistent study, we will eventually unravel many that seem to be mystery for now..

Teempakguy:

I have only an issue with the structural problem. I don't think it is much of a problem as the theory doesn't attempt to explain anything beyond the big bang.

I have a problem with the rapid inflation theory though. it invents too much "nonsense" which, to me, isn't scientific enough. I mean, what is, repulsive gravity?
I require more evidence before i can consider it a solved problem. but of course, it will give rise to a host of other problems. I mean, why matter and not antimatter? or does antimatter bend space in the opposite direction matter does, thereby achieving repulsive gravity? this could mean that antimatter is responsible for stretching the universe. but again, we need proof. such as the eLISA can provide.

it will however be launched in 2034. so, grab a cup of coffee . . .

Hahahahaha there are ways Repulsive gravity can be deducted which is Dark energy providing a push instead of a pull .. it is observed that it is some kind of negative energy accelerating the expansion of the universe and mostly labelled repulsive gravity.. https://en.m.wikipedia.org/wiki/Dark_energy

In general relativity even in Newton's theories both postulate gravity can be repulsive if the object is of negative mass... https://en.m.wikipedia.org/wiki/Negative_mass

Since we are yet to observe a negative mass, we should keep our fingers crossed. maybe dark matters/energies will provide more clues.

The theory of cosmic inflation was proposed in the 1980s, its a well accepted theory in the scientific community but as you and i well know it needs to give out predictions observed to be true before it can be accepted as an answer.

Maybe observation of anti-matter as you pointed our which ultimately may reveal anti-mass as predicted by General relativity and as such negative space/time distortion and Boom!!!! Negative (Repulsive) Gravity

The more we know the less we understand.. lol..

mrphysics:
Jonnydon you are right.
since everything was at it's infinity at singularity point, many scientists think they was an explosion Infact a bang.

let me also remind you that the density of the universe is on the increase as we speak and the abundances of light elements keep increasing.

this horizon problem, has it explained what happens beyond the regions of the black hole. why do we even have worm hole or is it the anti matter??

space, time which is older?? I.e where was the point of singularity .