Benito Salazar introduces himself in a letter to Mrs. Sanchez, applying for a position at her company. He has a master's degree in astronomy and over 10 years of experience working for respected astronomy companies, where he studied stars and planets, presented findings, and calculated celestial objects. His qualifications include observing the sky with telescopes, publishing research, and gaining training and field experience in astronomy over his career. He includes his resume and contact information, hoping for the opportunity to join Mrs. Sanchez's company.