of any meteoroid fragments is highly unlikely. Common micrometeorites would be indistinguishable from one another.

2017 interstellar meteor

CNEOS 2017-03-09, a meteor with a mass of roughly 6.3 tons, burned up in the Earth's atmosphere on 9 March 2017. It had a high mechanical strength, leading to it being suggested as candidate by the same team proposing an interstellar origin for CNEOS 2014-01-08.

Micrometeoroids

In 2000, observations made with the Advanced Meteor Orbit Radar facility at University of Canterbury

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