Kuiper Belt
Researchers have identified a compact cluster of objects, dubbed the inner kernel, within the solar system's Kuiper belt. This discovery, made by analyzing orbits of thousands of Kuiper belt objects, reveals an ancient, undisturbed formation at about 43 astronomical units from the sun. The finding offers insights into the early solar system's evolution, including Neptune's migration.
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Astronomers have uncovered a previously unknown object at the edge of the solar system, potentially a new dwarf planet or rogue world. The discovery, announced on September 6, 2025, expands our understanding of the Kuiper Belt. Further observations are planned to confirm its nature.