The oldest known galaxies yet

Added: 2026-06-02

[00:00:00]We found the oldest known galaxy yet. In 2023, the James Webb Space Telescope identified galaxies forming just a few hundred million years after the Big Bang. One candidate among the earliest appears in redshift suggesting it existed when the universe was less than 400 million years old. That's astonishingly early.

[00:00:21]These galaxies [music] seem more massive and evolved than expected, challenging our models of how quickly structure forms. It suggests galaxy formation may have been faster, more efficient, or [music] very different than we thought.

[00:00:34]We're not just looking far away, we're looking back at the universe's infancy.

[00:00:40]And it's already more [music] complex than expected. Enjoy today's science fact, please like and subscribe, and tune in tomorrow.