The family tree of the Milky Way. The mergers that gave us the galaxy we see today

The family tree of the Milky Way. The mergers that gave us the galaxy we see today

Galaxies build themselves up slowly over time by cannibalizing their neighbors. Using an advanced suite of computer simulations, researchers have now traced back the evolutionary history of our own Milky Way. Our galaxy, the Milky Way, currently hosts hundreds of billions of stars, and is pretty respectably sized for the kind of galaxy it is. …

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