First ever map of Milky Way's galactic graveyard revealed

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First ever map of Milky Way's galactic graveyard revealed
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Remnants of ancient stars are sometimes kicked out of the galaxy.

, such as neutron stars and black holes, and figuring out when they were born and how they evolved. What they found was a sprawling necropolis three times the Milky Way's current height. What took so long to envision the galaxy’s catacombs? The nascent Milky Way, in which these early stars lived, appeared drastically different to the galaxy we see today, so much so that even itshad not yet fully unfurled.

Created by astronomer David Sweeney and his colleagues at the University of Sydney, the new map reveals not only where the bones of these old stars could be hidden, but also that about a third of the remnants lying around have either already been or are on their way to being ejected from the. Supernovas explode with immense but random amounts of energy that can accelerate dust and gas to millions of miles an hour. Where higher or lower amounts of energy will be generated is almost unpredictable.

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