Curtin University researchers discovered that the Itokawa asteroid is potentially dangerous to Earth and that objects like it are difficult to destroy. Such bodies are also capable of absorbing the heat from explosions or impacts in large quantities, so it is preferable to modify their trajectory.
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Itokawa, whose diameter is 330 meters, was the first asteroid in history to be sampled during a space mission. Seven years later, the Japanese space agency collected a milligram sample from the surface of an asteroid to Earth. According to the findings, the object is 4.2 billion years old and in structure it is a pillow.
Itokawa is a structure made up of loose rocks and boulders, which makes it possible for it to form from an ancient monolithic asteroid that was shattered into pieces by gravitational forces. Other objects that are potentially harmful for the Earth might have the same structure.
According to experts, one should not be depressed if an asteroid threatens the Earth, or you may use a different technique: a nuclear explosion nearby, which will allow the object to go off course without much damage. However, the experience with the DART probe, which managed to alter the Dimorph asteroid's orbit by hitting it, is unlikely to be useful here.
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