Stolen from another sun: This backward-traveling asteroid could be an interstellar space fossil
by Amina Khan, Los Angeles Times
May 22, 2018
3 minutes
Scientists have discovered an immigrant in our midst: an asteroid near Jupiter's orbit that arrived from outside the solar system some 4.5 billion years ago.
The orbit of 2015 BZ509, described in a letter in the Monthly Notices of the Royal Astronomical Society, could offer a way for scientists to sample the contents of distant star systems.
"If it's a good result, it's a little bit surprising - but promising," said David Jewitt, a planetary astronomer
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