Science From Wikipedia, the free encyclopedia Jump to navigation Jump to search For other uses, see Science (disambiguation) . Chronology of the universe as deduced by the prevailing Big Bang theory , a result from science and obtained knowledge Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe . [1] [2] Science may be as old as the human species , [3] and some of the earliest archeological evidence for scientific reasoning is tens of thousands of years old. [4] The earliest written records in the history of science come from Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE . [5] [6] Their contributions to mathematics , astronomy , and medicine entered and shaped Greek natural philosophy of cl...