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Nature 402, 29-30 (4 November 1999) | doi:10.1038/46922

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Galaxy formation: Clumps that survive to tell a tale

Sidney van den Bergh

How did the Milky Way system form? The present consensus1 is that the region inside the orbit of the Sun was mainly formed by rapid collapse2, whereas the outer Galactic halo assembled more slowly by the capture of many smaller bits and pieces3.