Home https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Science https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ The surprise asteroid "city-killer" almost hit the Earth

The surprise asteroid "city-killer" almost hit the Earth

An asteroid "killer city" flashed off Earth on Thursday, astounding astronomers who did not take the trajectory on the rock days before passing the planet, according to a report.

The rock, called Asteroid 2019 OK, went within 43,500 miles of the Earth, traveling at a speed of 15 miles per second, Sydney's first Morning Herald release

The asteroid, which was between 187 feet and 427 feet in diameter, was discovered this week by two. astronomy teams in Brazil and the US – and confirmed by NASA's Jet Propulsion Laboratory.

This is the largest rock that goes through Earth this year-and maybe this decade.

"This is one of the Earth's closest approaches to an asteroid we know about. And he is quite big, "said Michael Brown, an associate professor at the Monash University School of Physics and Astronomy. I do not think he's still sunk. That's a pretty big deal. "

Astronomers usually track the asteroids even earlier, but this is difficult to take because it travels from the sun.

While the size of the scale may seem small ̵

1; roughly the length of a football field – experts say the impact of Asteroid 2019 OK would have been catastrophic.

"He would hit more than 30 times more energy than the Hiroshima atomic blast," said Alan Duffy, Swinburne University's astronomy.

"This is an asteroid of a killer city. But because it is so small, it's incredibly hard to see until the last minute.

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