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Astronaut Paolo Nespoli spoke about that at the moment the space has more than a million asteroids that may at any moment encounter with our planet. He believes that to do something to protect the Earth need right now, or in the future to avoid catastrophe will not succeed, according to the portal WWW.PLANETANOVOSTI.COM.
the Dinosaurs became extinct about 66 million years ago, when the Earth crashed into an asteroid, with a diameter of about 10 miles. Of course, humanity is more prepared to face than the animals, but still needs to do a lot.
the Italian astronaut also added that most of the asteroids are quite small, but they can harm the planet. It is worth noting that to date, NASA has made huge strides in that time to search for near-earth objects larger than one km. While a lot of the asteroids that can be called potentially dangerous, are more than a kilometer in diameter. In addition, there are about 10% of asteroids that are a direct threat to the Earth and a large part of which was not discovered until today.
the Probability of collision of Earth with an asteroid is quite small, but if it happens, humanity may die. For example, in 2013 the Chelyabinsk meteor exploded, the diameter of which was 20 meters. It caused damage not only to buildings, but more than 1,000 people. Experts never expected anything like this, so after this situation began to fear that in the future, the asteroid will be much more that can lead to disaster.
To date, NASA has been studying the asteroid Bennu, the size of which reach 500 meters in diameter.
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