Which of the following tentative results found by the James Webb Space Telescope would force astronomers to reconsider current models of the evolving universe if they prove to be correct? Select one alternative: Measurements of Hubble's constant that different from those derived from observations of supernovae. Observations of beams from distant quasars. Observations of the microwave background. The existence of planets in orbit round massive black holes. The apparent existence if galaxies at a time when the universe is almost 20 times smaller than it is today. O

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