Mystery Atlas
Technology

Planck Satellite

European Space Agency cosmic microwave background telescope (2009-2013) whose more sensitive data found no significant 'dark flow' signal at the strength WMAP-based analyses had reported.

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Theories & Explanations

  • "Dark Flow" Claim

    Planck Satellite contradicts "Dark Flow" Claim — Planck's 2013 analysis found no significant bulk-flow signal at WMAP's reported strength, though a 2015 reanalysis incorporating additional cluster data reported a weaker, partial 2-3 sigma signal, so the claim is unconfirmed rather than fully closed.

Science & Technology

Explored on these pages

What Is the 'Dark Flow', and Is It Evidence of Another Universe?

What 'dark flow' is: the 2008 galaxy-cluster motion claim, why it briefly made headlines as multiverse evidence, and why Planck's data has not confirmed it.