Astronomers analyzed light data from a piece of supernova shrapnel to gain clues about where it came from. About 2,000 light-years away from Earth, there is a star catapulting toward the edge of the Milky Way. This particular star, known as LP 40−365 is one of a unique breed of fast-moving stars — remnant pieces of massive white dwarf stars — that have survived in chunks after a gigantic stellar explosion.
“This star is moving so fast that it’s almost certainly leaving the galaxy…[it’s] moving almost two million miles an hour,” says JJ Hermes, Boston University College of Arts & Sciences assistant professor of astronomy...
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