Discussion about the universe

A: I know you are famous for astronomy. How much do you know about universe?

B: Just a little, because there are so much knowledge.

A: I have questions about universe. May I ask you?

B: Maybe I can answer some of your questions.

A: How did the universe begin?

B: No one knows exactly how the earth began, but according to a widely accepted theory, the universe began with a “Big Bang”.

A: How will it end?

B: I don’t know, and I am interested in this question.

A: Another question is about life. Where do we come from?

B: The formation of life experienced a long and complicated process. You can watch the movie Ocean Origins.

A: Yeah. Do you want to have a space travel?

B: Of course, that sounds attractive.