The Double Asteroid Redirection Test successfully showed that it is possible to crash a spacecraft into a small asteroid and change its orbit. This technique could save Earth from asteroids in the future.
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Tiny glass droplets found on the Moon show Earth and its satellite have been hit by ‘waves’ of asteroid impacts in the past.
This article was based on research that has been retracted. See editor’s note.
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Professor, Applied Geology, Curtin University
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ARC Future Fellow, School of Earth and Planetary Sciences, Curtin University
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Research Professor and Director of the Southeastern Paleoamerican Survey (SEPAS) at the South Carolina Institute for Archaeology and Anthropology, University of South Carolina
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Professor of Astronautics, University of Southern California