Story perspectives

ACT Data Deepens Hubble Tension, Challenges Cosmological Models

11/25/2025

Summary

Story summary

The Atacama Cosmology Telescope (ACT) released final data showing significant discrepancies in the Hubble Constant, aligning with the European Space Agency’s Planck satellite results.
The findings reinforce the Hubble Tension, where different measurement methods yield conflicting values.
ACT's new observations discredited 30 extended cosmological models.
The research, published in the Journal of Cosmology and Astroparticle Physics, advances polarization mapping to improve cosmological tests.

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Story summary

The Atacama Cosmology Telescope (ACT) released final data showing significant discrepancies in the Hubble Constant, aligning with the European Space Agency’s Planck satellite results.
The findings reinforce the Hubble Tension, where different measurement methods yield conflicting values.
ACT's new observations discredited 30 extended cosmological models.
The research, published in the Journal of Cosmology and Astroparticle Physics, advances polarization mapping to improve cosmological tests.