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Phoenix666 [soylentnews.org] writes:

When a dying star goes supernova, material sprays out into space. If this stellar burst of energy happens close enough, radioactive debris can rain down onto Earth [csmonitor.com].

This material could hold clues into mysteries of our own corner of space. So two research teams, in new studies both published Wednesday in the journal Nature, looked at deposits of the radioactive isotope iron-60 – essentially cosmic bread crumbs.

One team used the data in a model to determine when and where two recent, in cosmic terms, supernovae occurred. And their work [nature.com] could help unravel the mystery of the Local Bubble, a mass of hot gas that enshrouds our solar system.

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