Scientists examined dust collected from the surface of the ancient and "potentially hazardous" asteroid Itokawa. His
It turned out that the space wanderer survived inspace, despite numerous collisions over the past 4.2 billion years. This means that objects of the same type are more likely to make contact with our planet. In addition, the new method of changing the trajectory of asteroids, which NASA is now testing, is not the best way to destroy such space rocks.
DART (English)The Double Asteroid Redirection Test is the first ever project to change the trajectory of asteroids and redirect them. To test the method, NASA launched an unmanned manned spacecraft to the binary near-Earth asteroid Didymos and changed the object's trajectory with its Dimorph component. The ship was developed by employees of the Johns Hopkins Applied Physics Laboratory and several NASA centers. The program is needed to test a method to protect the Earth from asteroid impacts.
"A powerful collision that destroyedmonolithic parent asteroid Itokawa and formed the current object, occurred at least 4.2 billion years ago. This is a surprisingly long survival time for an asteroid of this size. This is due to the impact-absorbing nature of the object's material,” explains Fred Jourdan, a geochemist at Curtin University in Perth, Australia, and lead author of the study. “Itokawa is like a giant space pillow, and it is very difficult to destroy it, like other similar objects.”
The study was published Jan. 23 in Proceedings of the National Academy of Sciences.
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