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World’s New Oldest Asteroid Site

Wednesday 29th January / presented by Fiona Bartholomaeus

A year after having previously helped solve an ancient mystery regarding Egyptian glass, Curtin University Space Science and Technology Centre researcher Dr Aaron Cavosie has made another 'meteoric' discovery, specifically determining the age of what is now the world's oldest known asteroid strike site.

Yarrabubba, south east of Meekathara, was known to exist before but had not had its age determined until recently, with advanced microscopy methods dating the crystals re-set by the impact event determining the crash to have happened ~2.229 billion years ago, beating the next oldest site of the Vredefort impact in South Africa by 200 million years.

Dr Aaron Cavosie joined RTRFM to tell us more.

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