The voids of the universe are magnetized, and nothing in standard cosmology magnetized them. Gamma-ray observations of distant blazars supply the evidence: TeV photons pair-produce on background light, the pairs should inverse-Compton scatter the CMB into detectable GeV halos and echoes, and the persistent absence of this secondary emission implies the pairs are deflected by intergalactic magnetic fields filling the voids, with lower bounds around 10^-16 Gauss on megaparsec scales (Neronov and Vovk 2010; MAGIC and Fermi follow-ups strengthening the case). Fields inside galaxies and clusters are explained by dynamo amplification of small seeds, but dynamos do not operate in voids: a field pervading the emptiest regions must have been seeded before structure formed, or transported there by processes that standard accounting strains to supply.
ΛCDM contains no primordial magnetogenesis: standard inflation produces no magnetic fields (electromagnetic conformal invariance suppresses them), post-inflation mechanisms (phase transitions, the Harrison mechanism, Biermann batteries at reionization) yield seeds many orders below the void bounds or with wrong coherence lengths, and astrophysical pollution, outflows from galaxies blowing fields into voids, struggles to reach the deep void interiors the blazar bounds probe. The result is a gap at the foundation: the universe's largest-scale magnetic infrastructure has no standard origin, and explaining it by modifying inflation imports tuned couplings invented for the purpose.
The standing is a quiet foundational anomaly: the lower bounds have survived a decade of scrutiny (with time-delay interpretations debated), CTA will measure or further bound the void fields decisively, and magnetogenesis remains a missing chapter of the standard cosmology rather than a parameter to adjust.