fromwww.scientificamerican.com
5 hours agoThe Kuiper Belt is packed with weird peanut-shaped objects. Astronomers think they know why
Out in the Kuiper Belt, the massive doughnut of debris beyond Neptune, about one in 10 kilometer-scale objects have surprised scientists with their unexpected shape. Rather than resembling a ball, each of these remnants from the solar system's early history is composed of two different-sized lobes, like a peanut or a lazily assembled snowman. Astronomers got their clearest view yet of the phenomenon when NASA's New Horizons mission flew by the two-lobed Kuiper Belt object Arrokoth in 2019.
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