Hubble and Webb found 27 of the faintest trans-Neptunian objects ever directly seen, including bodies only a few kilometres wide—and unexpectedly found fewer tiny objects than some planet-formation models predicted, suggesting the Kuiper Belt was not ground down by collisions in the way astronomers expected.

A 27-object Webb survey, with Hubble colours for 13 detections, found fewer tiny TNOs than some models predict and surfaces that still resemble those of larger relatives. The post Hubble and Webb found 27 of the faintest trans-Neptunian obj…

Summary from SpaceDaily.

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1. SpaceDaily 14 Sep
   Hubble and Webb found 27 of the faintest trans-Neptunian objects ever directly seen, including bodies only a few kilometres wide—and unexpectedly found fewer tiny objects than some planet-formation models predicted, suggesting the Kuiper Belt was not ground down by collisions in the way astronomers expected. ↗