How did the universe star according to bigbang theory?

Answer 1

One idea is the "Big Crunch" theory. It works like this. Edwin Hubble figured out that distant objects (galaxies, etc.) are moving away from uo. The farther away they are, the faster away they're moving. It only took a little creative thinking for this idea to arise: If the universe is expanding now, what happens when we rewind the tape and look back into time? The universe "banged" into existence. Got it so far? It continues to expand. One of two things is possible. Does it expand forever, or is there enough mass in the entire universe to slow everything down and then "pull it all back together" in the "Big Crunch" at the end of time? You make the call. Start by hitting the provided link to the Wikipedia article on the Big Crunch.

Answer 2

The Big Bang Theory present the theoretical premise for the causation, termination, and continuation of an evolutionary expansion of the universe. The Big Bang promotes that the universe is Time bound (or has a finite existence), that the universe is expanding (within the dimensional limits of Space and Time), that the universe is evolving a set amount of matter and energy while it is expanding over time, and that the universe is homogeneous and isotropic with respect to Space and Time.

The Big Bang explains that the universe is Time bound (or has a finite existence), that the universe is expanding (within the dimensional limits of Space and Time), that the universe is evolving a set amount of matter and energy while it is expanding over time, and that the universe is homogeneous and isotropic with respect to Space and Time.

Answer 3

Various scenarios are possible according to the theory. The most likely scenario at this point is continued and accelerating expansion. This could result in a Big Rip, whereby the expansion becomes so pronounced even on small scales that structures, and ultimately even atoms are torn apart. At the same time, entropy is increasing to a maximum, culminating in the Heat Death of the universe.

Whatever hypothesis you prefer, it doesn't end well.

Answer 4

According to big bang theory our universe starts about 13.7 billions years ago .

A vast explosion took place having infinite temperature and infinite density and in just few seconds it occupy the space comparative to the size of our galaxy and from then it continues to expand. But still it is unclear that how everything is start out of nothing

Answer 5

The Big Bang theory describes how, some 13.7 billion years ago, the universe started expanding rapidly from an immensely dense and hot state. It describes how this expansion allowed it to cool, ultimately allowing discrete particles of matter to coalesce from the dense broth of energy and fundamental particles. It describes how, consequently, gravity brought this matter together in clumps, forming stars and galaxies. It describes how, depending on the total mass of the universe, this expansion will go on unabated while the universe fizzles out and goes dark, or, alternatively, collapses in on itself, culminating in a Big Crunch. Current models favour continued expansion.

Answer 6

Began with a Big Bang: The Big Bang is a sort of beginning, the beginning of the Universe as we know it. But current science does not have the means to figure out what came BEFORE the Big Bang.

How will it end: The Universe is expanding, the expansion is accelerating; it seems that it will continue expanding forever - probably exponentially.Evidence:

* The Universe is currently expanding, as evidenced by the redshift of distant galaxies.

* Calculations (based on General Relativity) show that the Universe can't remain static for a long time. It must needs expand or contract.

* Likewise, the Second Law of Thermodynamics doesn't allow an unchanging Universe - we would eventually run out of energy.

* The Cosmic Microwave Background Radiation closely matches what is expected from a Big Bang.

* The relative abundance of elements in the Universe closely matches what is expected from a Big Bang.

Answer 7

One of the main pieces of evidence in support of the Big Bang is the cosmic background radiation which was detected and mapped by the COBE satellite. This showed the residue of the radiation from immediately after the Big Bang. Because of the expansion of the universe since the radiation set out on its way to earth the radiation is now in the microwave wavelengths.

There are many uncertainties about the state of the universe now: the main one being the missing mass and dark energy which are required to fully reconcile the observed and expected amounts of mas and energy in the universe. As a result the future of the universe is uncertain and the main possible outcomes are:

• the universe continues to expand with the rate of expansion slowing down because of the gravity of the matter in the universe. Eventually, expansion is reversed and the universe goes into a reverse process, which ending in a Big Crunch. The end would be all matter and energy coming together in a point of singularity.
  
• the universe continues to expand and, as it does, the stars and galaxies get further and further apart. Entropy ensures that the universe ends as a cold dark space.

In any case, the sun becoming a red giant in around 4.5 billion years' time means that these developments are likely to have little effect on any inhabitants of the solar system.

Answer 8

galaxies will move toward each other then form a single galaxy

Answer 9

The Big Bang explains quite a lot - the expansion of space, the formation of elements, the observed percentages of the elements, the formation of galaxies, among others.

Answer 10

Our universe is expanding