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Why the Moon is so like the Earth

The Moon’s isotopic composition is uncannily similar to Earth’s. This may be the signature of a magma ocean on Earth at the time of the Moon-forming giant impact, according to numerical simulations.

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Fig. 1: Snapshots of a simulation of the Moon-forming impact.


  1. 1.

    Canup, R. M. Ann. Rev. Astron. Astrophys. 42, 441–475 (2004).

    Article  Google Scholar 

  2. 2.

    Melosh, H. J. Phil. Trans. Royal Soc. A 372, 20130168 (2014).

    Article  Google Scholar 

  3. 3.

    Hosono, N. et al. Nat. Geosci. (2019).

  4. 4.

    Elkins-Tanton, L. Ann. Rev. Earth Planet. Sci. 40, 113–139 (2012).

    Article  Google Scholar 

  5. 5.

    Young, E. D. et al. Science 351, 493–496 (2016).

    Article  Google Scholar 

  6. 6.

    Canup, R. M., Barr, A. C. & Crawford, D. A. Icarus 222, 200–219 (2013).

    Article  Google Scholar 

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Correspondence to H. Jay Melosh.

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Melosh, H.J. Why the Moon is so like the Earth. Nat. Geosci. 12, 402–403 (2019).

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