This is a booklet on the deep science embedded in Patanjali Yoga Sutras. According to me Patanjali was a true scientist who gave the first knowledge about the control of thought and mind and about universal laws governing time and space. Unfortunately till now none of the commentaries on Yoga Sutras have explored them through the lens of science. I feel this essay will help overcome that lacunae. Sage Patanjali has been my teacher. Whatever little I have written in the last 20 years on spirituality or thought about the interaction of mind-matter and higher things have been inspired by Patanjali’s Yoga Sutras and I have always felt that his spirit has guided me in this journey. Yoga sutras is basically a book of life or how to maximize your living potential. It also teaches little bit of Hatha Yoga but the most important lesson it teaches in a scientific manner is how to make the mind (the instrument of comprehension) very powerful so that it can comprehend any secret of the Universe. And then use that powerful mind on different parts of body to get supernatural powers! Patanjali’s writings are like an infinite ocean. The more you read them the deeper is the knowledge. So this small booklet is a work in progress. I have been writing about the science in Yoga sutras for quite some time and have dealt them cursorily in my two books; Nature of Human Thought and Exploring the Mind of God. But this article is an attempt to explore it further and in depth. It is also surprising and fascinating that these sutras were written more than 2000 to 3000 years ago (the exact date is not known) and yet they present such scientifically advanced knowledge. One can only speculate that Sage Patanjali was not of this world but came from an advanced civilization to impart this knowledge. I have alluded to this aspect in this booklet. Exploring Deep Science in Patanjali Yoga Sutras. The booklet has the following sections: Who was Patanjali; About his Sutras or the book; Science of Sutras; Was Patanjali an extraterrestrial being; Patanjali and stars; Major Omissions in Sutras; and the final section is about my teacher Sage Patanjali. This is not a book in the true sense but a small booklet and my desire to publish it is to make it available to a wide audience for discussions and debate. I would therefore greatly appreciate it if the readers can comment on it either in Google book site or can send email to me. Anil K Rajvanshi Phaltan, Maharashtra, India June 2023. [email protected]