Foto del Big Bang (la Luz Más Antigua del Universo)

The video explains cosmic background radiation, originating from the Big Bang, and its journey through the universe. Initially, the universe was dense and hot, with free electrons and protons. As it expanded and cooled, electrons and protons formed hydrogen atoms, making the universe transparent and allowing light to travel freely. This light, now stretched into microwaves, is known as the cosmic microwave background (CMB). The video also discusses quantum fluctuations that led to the formation of cosmic structures like galaxies and superclusters.

What new insight or understanding did you gain from this video?