Earth had almost a devastating collision today with an asteroid moving at a speed of 24 km / h (40 mph) than the Moon.
The asteroid flew toward us from the direction of the sun and made it difficult to see it. It was first seen a few days ago and has turned out to be an asteroid only the previous day.
"It's impressively close, I think it's not yet sunk in. It's a pretty big deal," said Associate Professor Michael Brown of Monash University's Department of Physics and Astronomy Sydney Morning Herald. If the asteroid had been hit, the impact would have been comparable to the explosion of a nuclear weapon.
"It would have struck the Hiroshima atomic explosion with 30 times the energy," said astronomer Alan Duffy of Swinburne University, calling it a "city killer asteroid."
Brown said today's incident is one of Earth's best-known approaches to an asteroid. The asteroid was so close that you can only see it with binoculars if you look at the right place in the sky.
Although the asteroid could have been devastating in an impact on Earth, it is not comparable to the asteroid that extinguished the dinosaurs, which were nearly 10 miles wide. The Earth itself has a diameter of just over 12,000 km.
According to NASA, Asteroid 2019 OK was once near Earth, but never so close. Her last visit was February 1, 2017, even though she was more than 40 million kilometers from the Earth's surface. It is next expected to arrive in 2024 within 46 million miles of Earth. For reference, the Sun is about 93 million miles from our planet.
The asteroid was one of four that were flown from Earth on Wednesday, although 2019 OK was the next and largest asteroid. The HM10 asteroid passed 3.9 million miles, the 2019 OD asteroid was 219,375 miles from Earth's surface, and finally the 2019 OE asteroid was within 602,000 miles of Earth, about two and a half times the distance between Earth and moon corresponds. Of the three other rocks, the 2019 OD asteroid was the largest, probably between 170 feet and 393 feet in diameter.
Although the Asteroid 2019 OK was not in danger of actually hitting the Earth, experts say an incoming asteroid with sufficient notice has emerged, it may be possible to gently launch the asteroid's orbit and make it miss our planet ,
While this often occurs in films such as Armageddon and Deep Impact to blow up an asteroid to prevent the earth being hit, this is in real life no option. While an atomic bomb could actually destroy an asteroid, NASA says it's likely that large parts of the destroyed rock would still hit the planet and cause massive damage.