STRANGE MATTER. “The existence of strange planets is based on a long-standing theory. It has long been proposed that SQM may be the final ground state of hadronic matter. Ordinary nuclei, made up of up and down quarks, may dissolve their boundaries and transit to an SQM phase (consisting of up, down, and strange quarks) if the nuclei experience high-enough pressure. Strange matter in bulk is stable. Even small chunks of strange matter with baryon number lower than 10(7), called “strangelets,” can be stable due to surface tension.” (SQM = Strange-quark matter).
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