পৃথিবী থেকে মহাবিশ্বে এক যাত্রা | Journey Through the Universe — Sci-Voy

Is Earth really our address, or just the smallest part of a home far too large to see? In this Sci-Voy journey, we leave Earth behind and travel outward, layer by layer, to understand how big our cosmic home actually is. We start with our own planet and the Moon, then cross the inner Solar System: Venus's runaway greenhouse heat, Mercury's extreme days and nights, and the nuclear fusion powering the Sun. Beyond Mars and the asteroid belt, we visit Jupiter and Galileo's moons, the possible ocean beneath Europa, Saturn's rings, Titan's methane rivers, and Enceladus's water plumes. Then come Uranus's sideways spin, windy Neptune, the Kuiper Belt, Pluto, and the hypothesized Oort Cloud. From there, we cross the heliopause with Voyager 1 into interstellar space and meet Proxima Centauri, which brings the light-year into view. We then step into the Milky Way: its barred spiral structure, the Sun's place in the Orion Spur, star birth in nebulae, the origin of the elements in your body, the supermassive black hole Sagittarius A*, the stellar halo, and dark matter. Finally, we look beyond the galaxy to the Local Group, Andromeda, and the cosmic web. This is a journey through knowledge, not a literal trip. We use telescope observations, spacecraft data, and physical models, and we separate what is observed from what is modeled, what is strong evidence, and what is still an open question. Life beyond Earth, the nature of dark matter, and the full history of the Milky Way all remain unresolved, and we say so plainly. Sci-Voy - Journeys Through Science. CHAPTERS 0:00 Is Earth Truly Our Address? 1:22 Earth: Our Home World 3:05 The Moon: A Preserved Record 4:19 Venus: The Hottest Planet 5:36 Mercury: Closest to the Sun 6:33 The Sun: Our Star 8:32 Mars: Water, Past and Present 9:39 The Asteroid Belt 10:38 Jupiter and the Galilean Moons 11:50 Europa's Hidden Ocean 12:47 Saturn's Rings 13:17 Titan's Methane Rivers 13:47 Enceladus's Ice Plumes 14:46 Uranus's Sideways Spin 15:22 Neptune, the Windy Giant 16:12 The Kuiper Belt and Pluto 17:15 The Oort Cloud 18:04 Crossing the Heliosphere 18:39 Voyager 1 in Interstellar Space 19:42 Proxima Centauri and the Light-Year 21:16 Entering the Milky Way 22:18 The Sun's Place in the Orion Spur 23:06 How Many Stars Are in the Galaxy? 24:13 Where Stars Are Born 25:00 We Are Made of Stardust 26:03 The Galactic Bulge 26:32 Sagittarius A*: The Galaxy's Black Hole 28:26 The Stellar Halo 29:45 The Mystery of Dark Matter 30:46 Beyond the Milky Way: The Local Group 31:37 Andromeda and Looking Into the Past 33:36 The Cosmic Web 34:41 Are We Alone? 35:08 Returning to Earth 38:38 Journey Recap 44:10 Curiosity: Our Greatest Spacecraft 45:10 A Final Reflection SOURCES & FURTHER READING NASA - How Did Our Solar System Form?: https://science.nasa.gov/astrobiology... NASA - Solar System Facts: https://science.nasa.gov/solar-system... NASA - Moon Facts: https://science.nasa.gov/moon/facts/ NASA - Venus Facts: https://science.nasa.gov/venus/venus-... NASA - Mercury Facts: https://science.nasa.gov/mercury/facts/ NASA - Sun Facts: https://science.nasa.gov/sun/facts/ NASA - Mars Facts: https://science.nasa.gov/mars/facts/ NASA - Jupiter Facts: https://science.nasa.gov/jupiter/jupi... NASA - Europa: https://science.nasa.gov/jupiter/jupi... NASA - Saturn Facts: https://science.nasa.gov/saturn/facts/ NASA - Titan: https://science.nasa.gov/saturn/moons... NASA - Enceladus: https://science.nasa.gov/saturn/moons... NASA - Uranus Facts: https://science.nasa.gov/uranus/facts/ NASA - Neptune Facts: https://science.nasa.gov/neptune/facts/ NASA - Kuiper Belt: https://science.nasa.gov/solar-system... NASA - Pluto: https://science.nasa.gov/dwarf-planet... NASA - Voyager Interstellar Mission: https://science.nasa.gov/mission/voya... ESA - Anatomy of the Milky Way: https://www.esa.int/ESA_Multimedia/Im... ESA - Milky Way reference: https://www.esa.int/content/view/full... NASA - Galaxies: https://science.nasa.gov/universe/gal... NASA - Our Milky Way Galaxy: How Big Is Space?: https://science.nasa.gov/universe/exo... NASA - Astrobiology: https://science.nasa.gov/astrobiology/ #SciVoy #Space #Astronomy #MilkyWay #ScaleOfTheUniverse #Cosmos #ScienceDocumentary