The day Earth had a near-miss with a 'city-killer' asteroid
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https://www.baka.com.au/national/earth-had-a-near-miss-with-city-killer-asteroid-this-morning-20190725-p52apn.html
>An asteroid about 100 metres in diameter and racing at 24 kilometres a second has just missed the Earth.
>The rock, called Asteroid 2019 OK, sped by our planet at 11.22am on Thursday, passing within about 70,000 kilometres – which is a long way away but closer to us than the moon’s orbit.
>It is the largest rock to fly at such close quarters to the Earth this year, and possibly for many years.
>"It would have hit with over 30 times the energy of the atomic blast at Hiroshima," says Swinburne University astronomer Associate Professor Alan Duffy.
>An asteroid about 100 metres in diameter and racing at 24 kilometres a second has just missed the Earth.
>The rock, called Asteroid 2019 OK, sped by our planet at 11.22am on Thursday, passing within about 70,000 kilometres – which is a long way away but closer to us than the moon’s orbit.
>It is the largest rock to fly at such close quarters to the Earth this year, and possibly for many years.
>"It would have hit with over 30 times the energy of the atomic blast at Hiroshima," says Swinburne University astronomer Associate Professor Alan Duffy.
