Can a Photon Live Forever… and What Happens to the Oldest Light?
#photon #cosmiclight #universe Right now, light from the very beginning of time is passing through your body. It has been traveling for nearly fourteen billion years. Through empty space. Through galaxies. Through you. And scientists have no idea if it will ever stop. A photon, the tiniest packet of light, may live forever. Or it may have a secret countdown clock ticking inside it right now. We'll travel from the moment the first light broke free, to a future so far ahead that even light itself might go dark. If you enjoy the journey, subscribe. Let's go. Sources: a. Big Bang Light Reveals Minimum Lifetime of Photons – Scientific American, https://www.scientificamerican.com/ar... b. What is the lifetime of a photon? – Physics World, https://physicsworld.com/a/what-is-th... c. Science Explained: How Long Can Photons Live? – Futurism, https://futurism.com/science-explaine... d. Oldest Light in the Universe – NASA, https://svs.gsfc.nasa.gov/30133 #photons #space #universe #light #physics #cosmology #bigbang #CMB #science
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