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An asteroid that could erase a city that missed the earth, capturing scientists by surprise



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Asteroid Bone [NASA / Goddard / Arizona University] , passing around Earth earlier this week – and the scientists did not notice that it was only one day away from the near passage of Earth

  • The rock called Asteroid 2019 OK was from 187 to 427 feet (Wide 57 to 130 m. It was not big enough to cause extinction at a dinosaur level, but scientists called it a "city killer" that could
  • Its nearest level flew 45,000 miles (73,000 kilometers) from the Earth, to look at this in perspective, it is less than a fifth of the distance to the moon, according to [1 9459038] The Washington Post The asteroid caught surprise scientists, with the astronomical teams in Brazil and the United States uncovered the asteroid only on Wednesday, just the day before it flew near the Earth.

Asteroid 2019 OK managed to avoid observers as it is relatively small compared to other major asteroids. And he was traveling fast at about 54,000 miles per hour. Plus, it reflects enough light to be taken with a telescope only when it's a few days out of the Earth and even then the astronomers have to look at the right place at the right time.

Michael Brown, an associate professor of astronomy at the University of Monash in Australia, notes that just three days before it passed Earth, the asteroid 2019 OK was 1000 times weaker, making it more difficult to spot.

Brown added that for the past month, the asteroid was relatively close to the sun, so it can only be seen around dusk.

NASA is already discovering larger asteroids from Asteroid 2019 OK. In 2005, Congress directed the space agency to find at least 90% of potentially dangerous asteroids larger than 140 meters by the end of 2020 (Asteroid 2019 OK was only 130 meters wide). But he has identified only about a third of those so far, according to Gizmodo .

Asteroid 2019 has already passed the Earth, so there is no threat at the moment, but there may be others.


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