The Universe Is Older Than You Think | Feynman Explains Why

You know the number. Thirteen point eight billion years. You've seen it in textbooks, documentaries, science museums. The age of the universe. Simple. Settled. It isn't. That number is correct in one very specific sense. But the way almost everyone understands it is wrong — in a way that makes the night sky look completely different once you actually see it. Here is the question nobody asks. Thirteen point eight billion years as measured by whom? Time is not universal. Einstein proved it. Moving clocks run slow. Clocks in stronger gravity run slow. Two clocks that separate and reunite will disagree about how much time has passed. GPS satellites have to correct for this every single day or your navigation drifts by kilometers. Time is relative. Always has been. And then there's light. The star you see tonight — you are not seeing it as it is. You are seeing it as it was, when that light left. The Andromeda Galaxy is two point five million light years away. The light reaching your eyes right now left before humans existed. The James Webb Space Telescope shows us galaxies as they were thirteen billion years ago. We are watching the universe's childhood, delivered right now by ancient light that has been traveling longer than Earth has existed. But the strangest part: the observable universe is ninety three billion light years across — not thirteen point eight. Because space itself is expanding. Not the matter in it. Space. And space has no speed limit. In the first fraction of a second after the Big Bang, the universe expanded faster than light. Right now, there are regions so far away that space between us is expanding faster than their light can cross it. We will never see them. Ever. The universe you observe is not a snapshot. It is a layered archive of billions of years of history, arriving at your eyes simultaneously from different distances, different eras, different chapters. The night sky is not the universe. It is the universe's memory. ⚠️ DISCLAIMER: This channel has no official connection to Richard Feynman, his estate, or Caltech. We are independent educators using AI technology to make Feynman's teachings more accessible. This isn't his voice — it's our tribute to his teaching style, created purely for education and inspiration. No impersonation intended. ✔️ What we do: Present physics concepts inspired by Feynman's teachings using AI voice synthesis, faithful to his original ideas. ❌ What we don't do: Claim this is actually Feynman speaking or misrepresent his ideas. #physicsexplained #cosmictime #lightyears #jameswebbtelescope #bigbang #feynmanlectures #mindblowingscience #sciencedocumentary #cosmicmicrowavebackground #relativity #richardfeynman #universeexplained