“As for planetary defense missions in general, it is certainly something for us to consider to improve our understanding of the kinetic impact technique, but on Earth there is nothing to be concerned about from objects this size. ![]() The research was published in the journal Astrophysical Journal Letters.Īssociate professor Cristina Thomas, the Dart Observations Working Group Lead, of the University of Arizona, said: “These boulders are definitely something to take into consideration as we look forward to ESA’s Hera mission. Patrick Michel, Hera’s principal investigator, said: “It is likely Dimorphos was tidally locked before Dart’s impact, but is now probably either rotating or ‘librating’ – wobbling – as it orbits Didymos.” ![]() ![]() Early studies suggested that the Dart mission was a success, with the impact causing the orbit of Dimorphos to slow by about 0.1 inches per second.
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