Remember our conversations about the vastness of the universe and the possibility of life beyond Earth? Let's explore the scientific methods used to search for extraterrestrial life, such as detecting exoplanets and searching for biosignatures.  Discuss the challenges and potential rewards of this endeavor. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>