Use a scientific method to evaluate a burning scientific question: Are we alone in the universe?

N/B:  use the two aspect of scientific method to relate to this question

Remember the steps of the scientific method

1. make an observation

2. ask questions

3. form a testable hypothesis

4. make predictions based on your hypothesis

5. test your predictions

6. iterate or use your results to formulate new questions

Try to elaborate more on two of the above six points.