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Origin of Universe: Big Bang Theory Video Lecture | Crash Course for SSC CGL (English)
FAQs on Origin of Universe: Big Bang Theory Video Lecture - Crash Course for SSC CGL (English)
| 1. What is the Big Bang Theory? |  |
Ans. The Big Bang Theory is a scientific explanation for the origin of the universe. It proposes that the universe began as a singularity, a point of infinite density and temperature, and expanded rapidly around 13.8 billion years ago.
| 2. How was the Big Bang Theory developed? | |
Ans. The Big Bang Theory was developed through a combination of observational evidence and theoretical physics. Astronomers observed that galaxies are moving away from each other in all directions, indicating an expanding universe. The theory was further supported by the discovery of cosmic microwave background radiation, which is considered as a remnant of the initial explosion.
| 3. What happened during the Big Bang? | |
Ans. During the Big Bang, the universe rapidly expanded and cooled down. At the earliest moments, fundamental particles such as quarks and leptons formed. As the universe expanded and cooled further, protons and neutrons combined to form atomic nuclei, and eventually, atoms formed. Over time, galaxies, stars, and planets also emerged.
| 4. What evidence supports the Big Bang Theory? | |
Ans. Several lines of evidence support the Big Bang Theory. The observation of the redshift in the light from distant galaxies indicates that the universe is expanding. The discovery of cosmic microwave background radiation, which is a faint glow of energy that fills the universe, is consistent with the predictions of the Big Bang. Additionally, the abundance of light elements in the universe, such as hydrogen and helium, can be explained by the Big Bang nucleosynthesis.
| 5. What is the current state of the Big Bang Theory? | |
Ans. The Big Bang Theory is the most widely accepted explanation for the origin and evolution of the universe. It has been supported by numerous observations and experiments. However, there are still mysteries and questions that scientists continue to explore, such as the nature of dark matter and dark energy, which are believed to make up a significant portion of the universe's content. Ongoing research and advancements in technology aim to provide further insights into the Big Bang Theory and our understanding of the universe.
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