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doi: https://doi.org/10.1038/d41586-021-01954-4
Updates & Corrections
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Correction 19 July 2021: An earlier version of this story stated that space is a shared, but ungoverned, realm. International agreements such as the 1967 Outer Space Treaty guide what nations can and cannot do in space.
References
Hainaut, O. R. & Williams, A. P. Astron. Astrophys. 636, A121 (2020).