New Sednoid “Ammonite” discovery deepens Planet Nine mystery

Astronomers have discovered a new member of a rare and mysterious class of solar system objects known as sednoids — a subset of extreme trans-Neptunian objects (ETNOs) with exceptionally distant, elongated orbits. Even at their closest approach to the Sun, these icy bodies remain far beyond Neptune’s gravitational influence, traveling on paths that defy easyContinue reading “New Sednoid “Ammonite” discovery deepens Planet Nine mystery”
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