What Did NASA Find When It Looked Beyond the Farthest Galaxies We've Ever Seen?

Astronomers have confirmed galaxies whose light has traveled over 13.5 billion years — but push far enough and you reach an era where no galaxies existed at all. So what does a telescope see past the last one? This video walks backward through cosmic history: Hubble's deep fields, why Webb had to be built colder than deep space, the surprisingly bright early galaxies it found, and the dark ages when nothing in the universe was shining. Behind all of it sits the oldest light that exists, released 380,000 years after the beginning and invisible to us until we built instruments that could feel it. Because the edge in every deep field image was never the edge of the universe. It's the edge of what has reached us so far.