Hydrogen flakes dusted cosmos before there were stars or planets.
References
Pfenniger, D. & Puy, D. Possible flakes of molecular hydrogen in the early Universe. Preprint, (2002).
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Ball, P. Universe's first winter was snowy. Nature (2002). https://doi.org/10.1038/news021118-8
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DOI: https://doi.org/10.1038/news021118-8
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