After being hit by the Double Asteroid Redirection Test (DART) spacecraft in late September 2022, the orbit of the asteroid Dimorphos has shifted slightly. As a result, the period of the asteroid surrounding the larger asteroid Didymos shrank by about 4%. Changing the trajectory of the asteroid is one of Earth’s defense strategies from asteroid threats.
“For the first time, humans have been able to change the orbit of a planetary object,” said Lori Glaze, head of the planetary science division of the US National Aeronautics and Space Administration (NASA). Space11 October 2022.