At the frozen margins of our solar system, where sunlight barely reaches and time seems to slow, humanity's most powerful telescopes have uncovered something ancient and astonishing: small, distant worlds that have quietly held the memory of creation for 4.5 billion years. Trans-Neptunian Objects, long dismissed as cosmic leftovers, have been revealed by Hubble and Webb to be something closer to libraries — their icy surfaces inscribed with the chemical and geological record of a solar system still taking shape. In studying 27 of these city-sized bodies, astronomers have found that the outer s