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HertzsprungRussel Diagram Explained Mapping Lifespans of Stars Across the Cosmos Earth Science
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=E3m_DrtQQSg
This video introduces modern astronomy. Part three of three, this video introduces concepts beyond our solar system. Topics include the characteristics of stars, the Hertzsprung-Russel Diagram, and star sequences based on initial mass. • Outer Solar System — The outer Solar System is beyond the asteroids, including the four giant planets. ... Most of the planets in the Solar System have secondary systems of their own, being orbited by planetary objects called natural satellites, or moons (two of which, Titan and Ganymede, are larger than the planet Mercury). • Exoplanets are planets beyond our own solar system. Thousands have been discovered in the past two decades, mostly with NASA's Kepler Space Telescope. These worlds come in a huge variety of sizes and orbits. Some are gigantic planets hugging close to their parent stars; others are icy, some rocky. • Don't forget to subscribe to this channel so that you have access to all the content for this course. • 🧭 Find Jeremy here: • 📸 Instagram: https://www.instagram.com/calgeog/?hl=en • 📧 E-mail: [email protected] • #Earth, #Science, #Stars • Stars, those dazzling points of light in the night sky, have a secret: they change, evolve, and die. Just like us, their lives follow a fascinating script. This script is called stellar evolution, and it tells the story of how a star is born from a swirling cloud of gas, shines brightly for millions or even billions of years, and finally faces its grand finale, leaving behind a shimmering ghost or an explosive bang. • The size of the star plays a starring role in this cosmic drama. Heavy stars, the giants of the universe, live fast and die young, burning hot and bright for only a few million years before exploding in a spectacular supernova. Lighter stars, like our Sun, are the marathon runners of the stellar world, burning steadily for billions of years before gracefully fading into a white dwarf. • Nuclear fusion is the engine that fuels this journey. Imagine the star's core as a furnace, where hydrogen atoms are crushed together, releasing powerful energy. Over time, this energy creates heavier elements, causing the star to swell and evolve through different stages - a red giant, a supergiant, even a tiny, dense core called a neutron star. • But how do we study these slow-motion cosmic dances? We can't watch a single star change over eons! Instead, astronomers peek into the universe's vast collection, observing stars at different ages and piecing together their life stories like puzzle pieces. We also build sophisticated computer models, simulating the inner workings of stars to understand their secrets. • So, the next time you gaze at the starry expanse, remember: each twinkle is a chapter in a grand cosmic tale, a story of birth, brilliance, and transformation. Stellar evolution is a reminder that even stars, those seem
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