5 Methods Used to Calculate the Age of the Universe

How old is the Universe, and how do scientists calculate its age? 🌌 In this video, we explain in simple Hindi + English how scientists estimate the age of the Universe to be approximately 13.8 billion years. age of universe, how old is the universe, universe age, 13.8 billion years, age of universe explained, how universe age is calculated, Hubble expansion, Hubble constant, cosmic microwave background, CMB, Big Bang theory, oldest stars, globular clusters, radioactive dating, universe expansion, cosmology, astronomy, astrophysics, physics, space science, astronomy in Hindi, physics in Hindi, universe explained We explore five major scientific methods: 🔹 Hubble Expansion and the expansion of the Universe 🔹 Cosmic Microwave Background (CMB) 🔹 Age of the oldest stars 🔹 Globular clusters 🔹 Radioactive dating of ancient elements We also explain why different methods, using completely different observations, lead to a remarkably similar result. By studying the expansion history of the Universe, ancient stars, CMB radiation, and radioactive elements, scientists can reconstruct the cosmic timeline and estimate when the Universe began its evolution. Main topics: Introduction Why measure the age of the Universe? What was the Big Bang? Hubble Expansion Cosmic Microwave Background Oldest Stars Globular Clusters Radioactive Dating Comparing all five methods Can the age change? 🌌 Current best estimate: ~13.8 billion years Subscribe for more videos on Physics, Astronomy, Astrophysics, Cosmology, Quantum Physics and Space Science. Video Credit : Meta AI , notebooklm and Veo3 #AgeOfUniverse #universe #bigbang #cosmology #astronomy #astrophysics #hubble #CMB #spacescience #physics #ScienceNexusIITB