Science Education now is truly aiming to improve to quality education to develop knowledge and skills required. The need for outcome based science education has been there for decades. Outcome based science education is a practical approach to develop the curriculum with inclusion of learning practices and focus on the students rather than teacher. Outcome-based science education has many intrinsic benefits which must make it an attractive model for educationalist involved in curriculum planning, curriculum developers, teachers, employers, students. The article attempts to describe the concept of outcome based science education and also highlights the relationship of outcome based science education (OBSE) and students' centric learning which is imperative to achieve the desired outcome. Specifically and chronologically, this reflective article attempts clarification of key operational terminologies used, link between Competency Based science Education (CBSE) and OBSE, theoretical underpinnings of OBSE, challenges of OBSE, conclusions and recommendations.