<ul data-eligibleForWebStory="true"><li>String theory has long been considered a potential ultimate explanation for the workings of the universe.</li><li>However, many versions of string theory do not align with observed phenomena, creating a mismatch referred to as the 'string theory swampland.'</li><li>Physicist Eduardo Guendelman has proposed a new version of string theory where string tension is dynamic, potentially offering a solution to existing discrepancies.</li><li>Guendelman's theory introduces the concept of strings with changing tension levels, which could help explain cosmic phenomena like early inflation and the universe's current acceleration.</li></ul>

A new twist in string theory could solve a cosmic mystery

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