Gaia detects a shake in the Milky Way
Researchers of the UB and the University of Groningen lead one of the first big discoveries from the Gaia Mission, published in Nature. Position and movement data of more than 6 million stars show substructures that were never seen, originated by an impact that occurred more than 300 million years ago.

The impact can be the gravitational slowdown caused by the last passage of the Sagittarius Dwarf galaxy near the Milky Way disk.


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Generalitat de CatalunyaUniversitat de BarcelonaUniversitat Autònoma de BarcelonaUniversitat Politècnica de CatalunyaConsejo Superior de Investigaciones CientíficasCentres de Recerca de Catalunya