How do people find out about the past?

The past is experience, accumulated knowledge and a necessary condition for human development. Information about our past is constantly coming in. Knowledge about our history has already been accumulated in books, films, electronic storage sources. But until now, our past cannot be called 100% studied. And now we receive information through archeology (excavation of past civilizations, various historical finds), physics and astronomy (the origin and formation of planets, various substances – soil, trees, atoms, etc.), development and innovations in other related sciences.