A new technique could reconstruct images of the early Universe.
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References
Frisch, U., Matarrese, S., Mohayaee, R. & Sobolevski, A. A reconstruction of the initial conditions of the Universe by optimal mass transportation. Nature 417, 260 - 262 (2002).
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Ball, P. Cosmic wrinkles smoothed. Nature (2002). https://doi.org/10.1038/news020513-6
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DOI: https://doi.org/10.1038/news020513-6