Question

Q. With reference to the "Big Bang" theory regarding the development of the Universe, which one of the following statements is not correct?

• A.
  All matter forming the universe existed in one place in the form of a "tiny ball"
• B.
  After temperatures dropped, the Universe became transparent.
• C.
  The expansion created by the "Big Bang" continues even to the present day.
• D.
  Immediately after the "Big Bang" all matter started rotating around a youthful star generating dust, which we know as modern planets.

Answer 1

The correct option is D

Immediately after the "Big Bang" all matter started rotating around a youthful star generating dust, which we know as modern planets.
Explanation:

After the initial expansion, the Universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms. Giant clouds of these primordial elements later coalesced through gravity to form stars and galaxies.

Hence, (D) is wrong.

The model accounts for the fact that the Universe expanded from a very high density and high temperature state. The Big Bang Theory considers the following stages in the development of the universe. In the beginning, all matter forming the universe existed in one place in the form of a "tiny ball" (singular atom) with an unimaginably small volume, infinite temperature and infinite density.

At the Big Bang the "tiny ball" exploded violently. This led to a huge expansion. It is now generally accepted that the event of big bang took place 13.7 billion years before the present. The expansion continues even to the present day. As it grew, some energy was converted into matter.

Within 300,000 years from the Big Bang, temperature dropped to 4,500 K and gave rise to atomic matter. The universe became transparent.