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⭐ First story: • [Full] My second textbook - Science Lecture 1 Newton's laws of motion, ... Currently, science can observe only about 5 universes. Among them, the fact that mankind has discovered is that the age of the universe is about 13.8 billion years. Behind this discovery, there were contributions from scientists who figured out how to measure the distance between stars and developed the Big Bang theory. In Lecture 12, we will delve into the secrets hidden in the beginning and size of the universe and see how humans have solved the problem of the universe. All the knowledge we need to learn is in textbooks A lecture program that carefully selects useful lifelong knowledge for adults and teenagers from regular subjects We will set up a time to reinterpret the textbooks we knew. #MySecondTextbook #Textbook #LifelongKnowledge #Teenagers #NewInterpretationofTextbooks #LectureProgram #Science #Universe #MomentaryHuman #EternalUniverse #AgeofUniverse #13.8BillionYears #BigBangTheory #BeginningofUniverse #SizeofUniverse #HiddenSecretsofUniverse