21,288 views
⭐ Next story: • [Full] My second textbook - Science Lecture 11 Weather and climate, food... About 4.6 billion years ago, the solar system and the Earth were born from the explosion of a 'supernova'. How could humans, who live for only 100 years, know the age of the Earth? Also, the maximum depth that humans have penetrated into the Earth's interior is about 12km, so how could they know the structure of the Earth's interior that is deeper than that? In Lecture 10, we will go through the fierce journey of scientists who have discovered the method of measuring the age of the Earth and the internal structure of the Earth. 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 and provides time to reinterpret the textbooks we knew. #MySecondTextbook #Textbook #LifelongKnowledge #Teenagers #ReinterpretingTextbooks #LectureProgram #Science #Earth #IntroductionToTheEarthYouDidNotKnow #SupernovaExplosion #SolarSystem #BirthOfTheEarth #AgeOfTheEarth #InternalStructureOfTheEarth