Data science is an emerging field of information science that uses algorithms, Artificial Intelligence, Machine Learning, and other advanced digital tools to examine and extract knowledge and value from enormous sets of both structured and unstructured data, known as Big Data. Structured data is information that is either already organized or can be easily organized, such as information in spreadsheets. Unstructured data is such information as photos, video, and audio that must be organized before it can be analyzed.
Data science has a wide variety of applications and is used in many fields, from business to medicine to education. For example, NASA uses data science techniques and algorithms to automatically compare stellar photos over time, which helps it discover comets and exoplanets.