The Universe's FIRST SECOND Changed Everything We Thought About Space The Big Bang was not an explosion in space. It was space itself expanding. In this calming science bedtime story, we travel back 13.8 billion years to the moment when time began. From the Planck era and cosmic inflation to the first light of the Cosmic Microwave Background, this video gently explains how the universe formed stars, galaxies, Earth, and eventually… you. Along the way, we explore dark matter, dark energy, and the unanswered mysteries surrounding the Big Bang—including what might have existed before it. This is science told slowly, softly, and clearly, designed to quiet your mind and guide you toward deep sleep. If you’ve ever wondered what the Big Bang truly was, let this story carry you there… and beyond. 🌌 Subscribe for more Sleepy Science journeys: 👉 / @easysleepsciencechannel #BigBang #OriginOfTheUniverse #SleepyScience #CosmicInflation #CosmicMicrowaveBackground #CMB #DarkMatter #DarkEnergy #UniverseExplained #ScienceForSleep solar system, before the big bang, how the universe works, galaxies,the big bang theory,is the universe, astrophysics,big bang, big bang explained, what happened before the big bang, origin of the universe, universe timeline, cosmic inflation, planck time, quantum foam, cosmic microwave background, cmb explained, dark matter explained, dark energy explained, big bounce theory, multiverse theory, sleepy science bedtime