Astronomers have discovered Andromeda XXXVI, an ultra-faint dwarf galaxy orbiting Andromeda, containing stars over 12 billion years old.

Found through a collaboration between an amateur stargazer and researchers, this dim “fossil” offers rare insight into early cosmic structure formation.

Dominated by dark matter, it highlights both the origins of galaxies—and the enduring value of human observation in modern astronomy

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This episode includes AI-generated content.