Abstract
The cosmological constant problem represents an evident tension between our present description of gravity and particle physics. Many solutions have been proposed, but experimental tests are always difficult or impossible to perform and present phenomenological investigations focus only on possible relations with the dark energy, that is with the accelerating expansion rate of the contemporary universe. Here I suggest that strange stars, if they exist, could represent an interesting laboratory to investigate this puzzle, since their equilibrium configuration is partially determined by the QCD vacuum energy density.
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