Given they have no clue what dark energy might be, that's a definite yes. Dark energy stems from a hitherto undefined force that is pushing our universe into accelerated expansion. So that has yet to be discovered for sure.
And there might be others to explain observed effects like quantum entanglement and wave function collapse of photons before they are actually detected.
And there might be others to explain observed effects like quantum entanglement and wave function collapse of photons before they are actually detected.
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yes, and they could explain things like the quantum uncertainty theory.