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First stars formed even later than previously thought

Details: Published on 31 August 2016

First stars formed even later than previously thought

ESA press release

© ESA – C. Carreau

Based on the articles:

"Planck intermediate results. XLVI. Reduction of large-scale systematic effects in HFI polarization maps and estimation of the reionization optical depth", by Planck Collaboration
"Planck intermediate results. XLVII. Planck constraints on reionization history", by Planck Collaboration

To be published in Astronomy & Astrophysics, 2016