Source report. Hubble and Webb observations connect the colours of 27 distant objects with a larger Solar System puzzle.
Source: NASA / Hubble. Original source published 8 September 2026. Published on Alder Atlas: 14 September 2026.
Two telescopes, one sample
Astronomers combined visible-light observations from Hubble with infrared measurements from Webb to examine 27 small trans-Neptunian objects. NASA reported the work on 8 September, linking it to two papers in The Astronomical Journal. The research includes teams in Canada and the United States.
An unexpected resemblance
The objects’ colours resemble those of larger bodies in the same distant region. Researchers also found fewer small objects than expected. Together, those results raise questions about how these populations formed and how much their surfaces have changed.
Clues rather than a complete history
The observations may preserve information about early composition, but colour is not a direct recording of every collision or chemical change. This is a new constraint on the region’s history, rather than a finished explanation. Combining instruments matters because a visible-light view alone would leave part of the evidence unseen.
Sources & further reading
This is an independently worded, source-based report prepared with AI assistance for the Alder Atlas editorial project. It is not first-hand reporting.