Asteroid hunting: Astronomers trace fireball in Earth’s skies to space rock that made it


In an effort to learn more about potentially hazardous asteroids, astronomers have used telescopic surveys to find an image of the space rock that produced a 0.4-kiloton fireball over the Pacific Ocean


22 September 2022

Artist’s impression of a fireball in Earth’s atmosphere


Astronomers searching for the origins of a small asteroid that exploded over the Pacific Ocean in September 2020 have found an archive picture of it taken minutes before the impact, in the first discovery of its kind.

David Clark of the University of Western Ontario, Canada and his colleagues analysed satellite data of major meteor fireballs, identifying ones created by space rocks that would be big enough to show up in images from telescopic surveys, which routinely monitor the skies. After calculating …

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