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A collision between two neutron stars, tightly bound on a decaying orbit, appears to be a relatively rare event. In the entire Milky Way galaxy, of all thethat follow such a collision, and none in our own galaxy. But what if there were a kilonova in the Milky Way? What would that mean for life on Earth?
This helps us assess threats to our own existence, but also will allow scientists to determine the likelihood of life surviving on alien worlds in proximity to these star-shattering events that erupt with powerful,of gamma radiation , erupting out in a pair of narrow jets on either side of the colliding stars, as well as gamma-ray cocoons around each jet, which form as the jet tries to punch through material shed during the kilonova..
They found that any living thing within the narrow range of the jet out to a distance of 91 parsecs – 297 light-years – is probably toast due to the powerful gamma radiation. Outside of that narrow range, however, it is somewhat safer. You'd need to be within a distance of around 13 light-years to be hit by gamma radiation from the cocoon structures.It's the long-term bubble of cosmic rays that pose the most significant threat, the researchers found.
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