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CHEOPS Discovery Defies Planetary Formation Rules

Summary by Phys.org
We're starting to see just how exceptional our own solar system and its history is, as more exoplanets are discovered. A fourth exoplanet discovery in the LHS 1903 system made by ESA's CHEOPS mission places a rocky world right where it shouldn't be. This "inside-out system" could challenge our current understanding of planetary formation.

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The European Space Agency's (ESA) CHEOPS mission has made a remarkable discovery in the LHS 1903 system, identifying a fourth rocky exoplanet in a location that challenges current conventions about planetary formation. This system, peculiarly arranged as an 'upside-down system', features a rocky world where prevailing theory suggests it shouldn't be, raising fundamental questions about our understanding of cosmic processes. Exoplanets Reshape Ou…

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Phys.org broke the news in United Kingdom on Sunday, March 15, 2026.
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