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Cosmic Microwave Background

CMB Anomalies Atacama Cosmology Telescope Research Findings Observational Astronomy Cosmic Structure Formation Evidence for Dark Energy Universe Expansion Density of Matter Topology Kinematic Sunyaev-Zel’dovich Effect Sigma-8 Tension Elliptical Galaxies Big Bang Foreground Contamination Baryon Acoustic Oscillations Planck 2018 Data Planck Observations CMB Experiments Dark Energy Early Universe Measurements Planck Satellite Observations Hubble Constant Baryonic Acoustic Oscillations Radiation Expansion of the Universe Observational Techniques Standard Rulers

New Review Finds Cosmic Dipole Mismatch Challenging Standard Cosmology

A peer-reviewed synthesis finds the matter dipole does not match the CMB dipole, challenging cosmic isotropy.

Gravitational-Lens Time Delays Deliver New Hubble Constant, Deepening the Tension

Atacama Cosmology Telescope Issues Final Data Release, Confirms Planck-Like Hubble Value and Tightens Model Constraints

Ground Telescopes Capture Polarized Microwave Light From Cosmic Dawn