Who must know the scientific definition of economics

Everyone studying economics I'm just kidding haha Economics is the study of the production, distribution, and consumption of goods and services by consumers. Producers create and consumers buy and the study of the processes, behaviors, costs, and profits of that interchange is called economics. 
                         HIT THE TANKS BUTTON

The big bang theory suggests that the universe is constantly expanding and that stars, galaxies and other entities are moving away from each other. if there were a galaxy moving closer to earth then that would contradict the big bang theory since the entities should be moving away from earth and from each other.

Becauase of september 11