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The earliest confirmed interstellar object, `Oumuamua, was discovered in theSolar System by Pan-STARRS in 2017, allowing for a calibration of the abundanceof interstellar objects of its size $\sim 100\;$ m. This was followed by thediscovery of Borisov, which allowed for a similar calibration of its size $\sim0.4 - 1 \mathrm{\; km}$. One would expect a much higher abundance ofsignificantly smaller interstellar objects, with some of them colliding withEarth frequently enough to be noticeable. Based on the CNEOS catalog of bolideevents, we identified in 2019 the meteor detected at 2014-01-08 17:05:34 UTC asoriginating from an unbound hyperbolic orbit with 99.999\% confidence. In 2022,the U.S. Department of Defense has since verified that "the velocity estimatereported to NASA is sufficiently accurate to indicate an interstellartrajectory," making the object the first detected interstellar object and thefirst detected interstellar meteor. Here, we discuss the dynamical andcompositional properties of CNEOS 2014-01-08, and describe our plan for anexpedition to retrieve meteoritic fragments from the ocean floor.

An Ocean Expedition by the Galileo Project to Retrieve Fragments of the First Large Interstellar Meteor CNEOS 2014-01-08