Скачать с ютуб 우주학 개론 제 1강 (우주의 기원, 우주의 주요사건, 우주의 현재 상황 - 한,영 ver) в хорошем качестве

우주학 개론 제 1강 (우주의 기원, 우주의 주요사건, 우주의 현재 상황 - 한,영 ver)

"A journey that began in the depths of darkness, Whispers of the Big Bang, filled with light and heat. The song of stars that blossomed in an instant, Galaxies dance and create stories. An elegant flow that always continues, Time is a small particle’s ball. Countless stars play fireworks, Embarking on a journey into the celebration of life. How many secrets are hidden, The prelude of the universe where darkness and light intersect. A story that gently wraps like a lullaby, The beginning of a journey that captures the heart of the universe. Now, let’s travel the universe together." The origin of the universe is explained by two main theories. The first is the Big Bang theory, which is a theory of a massive explosion that occurred about 13.8 billion years ago, creating the universe from an infinitely small and hot point. The other theory is the inflation theory, which assumes that the early universe underwent rapid expansion. This explosion and expansion brought about the creation and diffusion of primitive particles, which evolved into stars, galaxies, and the structures we know today . After these origin stages, astronomical events and the evolution of the universe continued. While discussing these, we can explain astronomical phenomena, galaxy formation, and the life cycle of stars, among others. The formation of the universe began after the Big Bang and was initially a mixture of energy and matter, which was extremely hot. As time passed, the universe cooled, and particles combined and formed structures. In the flat density, small irregularities occurred, and these irregularities caused particles to come together and form galaxies due to the action of gravity. As galaxies evolved into larger structures, celestial bodies including stars and planets were formed. Stars were born in giant clouds of gas called molecular clouds, which are made up of gases such as hydrogen and helium. When the gravity at the center becomes strong enough, many hydrogen atoms transform into helium through nuclear fusion and release energy. This became the source of light and heat for the sThe universe has undergone various and dynamic events. Here are some of the major events: Big Bang: A theory of a massive explosion that occurred about 13.8 billion years ago, creating the universe from an infinitely small and hot point. Galaxy formation: Galaxies were formed by the action of gravity due to early irregularities. Inside galaxies, stars, gas, dust, and other celestial bodies interact with each other, creating various phenomena. Birth and death of stars: Stars are born in molecular clouds made up of gases such as hydrogen and helium. As they reach the end of their lives, they explode in a supernova event, forming new elements and scattering them throughout the universe. Galaxy collision: Large galaxies can interact with each other due to gravity. This can cause galaxy collisions, leading to the formation of new stars and changes in the structure of the universe. Formation of black holes: After massive stars reach the end of their lives, they undergo gravitational collapse and form black holes. Black holes are regions of extreme gravity that absorb surrounding matter. Expansion of the universe: Observations show that the universe is continuously expanding. Galaxies are observed to be moving away from each other, and this phenomenon is thought to be due to dark energy. These major events play an important role in understanding various aspects of the universe. tars. As stars reach the end of their lives, they explode in a supernova event, forming new elements and scattering them throughout the universe. The universe is still in a stage of expansion and evolution. Here are some of the major aspects: Expansion of the universe: Observations show that galaxies are moving away from each other. This is one of the strong pieces of evidence that the universe is continuously expanding. Dark energy: About 70% of the universe is composed of unknown energy known as dark energy. This dark energy plays an important role in understanding the accelerated expansion of the universe. Ordinary matter: Only about 5% of the universe is composed of atoms, which are the matter we know. This includes stars, planets, gas, dust, and more. Dark matter: About 25% of the universe is composed of dark matter, which exerts gravitational influence but does not emit light. The nature of this matter is still unknown. Diversity of galaxies: Galaxies come in various sizes and shapes, and each galaxy contains various celestial bodies. The universe still hides infinite mysteries that we need to understand and explore.