The two sections exlained the big bang theory. In particular, the reading passage gives some information on the basic knowledge about the theory. On the other hand, in the listening section, the professor presents another alternative possibility to logically explain the theory.
According to the reading passage, the big bang theory presented by Lemaitre was proved to be a plausible theory through an experiment conducted by the famous expert in astronomy-Edwin Hubble. He argued that universe had been created by an explosion and it was still expanding. Besides, other astronomers also found that radiation emitted by the explosion are existing in the universe. This finding also supported the initial theory.
On the other hand, the professor suggests that the big bang theory can be explained through different logical reasoning. Ekpyrotic that goes in line with the previous experiment done by Hubble can be an alternative hypothesis for the creation of the universe. Although Hubbled showed the experiment supporting the big bang theory, it was not possible to say that the experiment was accepted without any doubts becasue virtually it was impossible to experiment the big universe. Therefore, there can be another possible hypothesis on the creation of the universe. According to alternative theroy, not becasue of one big explosion, but because of tow materials collision, the big explosion occurred. While there are some similarities and differences between the two hypotheses, the alternative Ekpyrotic hypthesis also can be explained by the previous experiments. Consequently, if the new technology is available to the extent that it will prove the later one, it will be possible for us to substantiate the alternative hypothesis in the end. |