How do we know that the Universe is Expanding? 🤔 w/ Professor Brian Cox 🤯

By 1929, Hubble had completely reimagined our place in the universe; not only was it home to millions of other galaxies, but the universe itself was expanding as well. Contrary to the previously held view of a static universe, Hubble ultimately proved that galaxies are, in fact, moving away from us. By studying the light emitted from various galaxies, Hubble discovered that the light appeared displaced toward the red end of the spectrum. It became apparent that our universe was ceaselessly expanding outward, and all galaxies housed within it were moving away from one another. This phenomenon, known as redshift, reveals that the farther a galaxy is away from us, the redder its light will appear. Hubble also demonstrated that galaxies farther away from us are receding faster than those nearby – a fundamental observation now known as Hubble’s Law. The idea of an expanding universe is a key underpinning of the Big Bang Theory. Hubble’s observations provided the earliest insight into the origins of our universe. . . . Brian Edward Cox is an English physicist and former musician who is a professor of particle physics in the School of Physics and Astronomy at the University of Manchester[2][3] and The Royal Society Professor for Public Engagement in Science.[4] He is best known to the public as the presenter of science programmes, especially BBC Radio 4’s The Infinite Monkey Cage and the Wonders of... series[5][6] and for popular science books, such as Why Does E=mc²? and The Quantum Universe. . . . . #astrophysics #clips #science #space #podcast #nasa #universe #blackhole #observableuniverse #cosmos #eventhorizon #cosmosexploration #physics #astrophysicist #neildegrassetyson #astronomy #shorts #mystery #mysterious #galaxies #stars #startalk #shorts #exoplanets #extraterrestrial #life #spectroscopy #sun #spectrum #universe #briancox #oxygen #hydrogen

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