The full peer-reviewed analysis of metallic spherules recovered from the Pacific Ocean by the Galileo Project has been published in Nature Astronomy, presenting isotopic and compositional data the authors characterize as anomalous in multiple independent parameters.
The spherules were recovered from the seafloor off Papua New Guinea in June 2023, at the predicted impact site of CNEOS 2014-01-08, a potentially interstellar object.
The published analysis examined 57 spherules using inductively coupled plasma mass spectrometry, electron probe microanalysis, and synchrotron X-ray fluorescence. Results revealed several anomalies: unusual depletion of manganese relative to iron, a beryllium-10 to beryllium-9 ratio outside the range observed in any catalogued meteorite class, and trace rhenium and osmium concentrations exceeding any known natural oceanic material.
The paper was careful to note what the data did not prove: the spherules' anomalous composition did not require an interstellar origin. The authors called for independent replication. The scientific community's response ranged from cautious interest to significant skepticism.