BBC Sky at Night Magazine

MILKY WAY IS A COSMIC THIEF

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New simulation­s show the Milky Way may have stolen its most distant stars from the Sagittariu­s dwarf galaxy. Simulation­s indicate that the dwarf could have lost a third of its stars to ours. Over time this may have created three streams of stars, radiating as far as a million lightyears from the galactic centre. “The star streams that have been mapped so far are like creeks compared to the giant river of stars we predict will be observed eventually,” says Marion Dierickx from the Harvard Smithsonia­n Center for Astrophysi­cs.

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