The BeLaU Spherules from IM1’s Site Are Not Coal Ash
<p>On 8 January 2014, US government satellite sensors detected three atmospheric detonations in rapid succession about 84 kilometers north of Manus Island, outside the territorial waters of Papua New Guinea. <a href="https://iopscience.iop.org/article/10.3847/1538-4357/ac8eac/pdf" rel="noopener ugc nofollow" target="_blank">Analysis</a> of the trajectory suggested an interstellar origin of the meteor. The object, labeled IM1 for Interstellar Meteor 1, arrived with a velocity relative to Earth of more than 45 kilometers per second and originated from outside the plane of the ecliptic. On 1 March 2022, the US Space Command issued <a href="https://lweb.cfa.harvard.edu/~loeb/DoD.pdf" rel="noopener ugc nofollow" target="_blank">a formal letter to NASA</a> certifying a 99.999% likelihood that the object was interstellar in origin. Along with this letter, the US Government released the <a href="https://lweb.cfa.harvard.edu/~loeb/lightcurve.pdf" rel="noopener ugc nofollow" target="_blank">fireball light curve</a> as measured by satellites, which showed three flares separated by a tenth of a second from each other. The bolide broke apart at an unusually low altitude of about 17 kilometers.</p>
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