Kuiper Belt
Researchers at Michigan State University have developed a computer simulation showing that gravitational collapse can naturally produce double-lobed, snowman-like structures in the outer solar system. These contact binaries make up about 10 percent of planetesimals in the Kuiper Belt beyond Neptune. The findings, published in the Monthly Notices of the Royal Astronomical Society, explain a long-standing puzzle in astronomy.
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Astronomers are using advanced telescopes to catalog thousands more objects in the Kuiper Belt, a distant ring of ancient solar system debris beyond Neptune. The Vera C. Rubin Observatory's Legacy Survey of Space and Time, which began operating in 2025, will lead this effort, potentially revealing hidden planets and structures. Experts anticipate discoveries that could clarify the early solar system's history.