Prof Fitzsimmons said: "It is important to know that scientists and engineers have made great strides in detecting Near-Earth Asteroids and understanding the threat posed by them".
'Hours later, amateur astronomer Michael Jäger of Weißenkirchen Austria video-recorded the space rock gliding through the southern constellation Serpens'. According to a report, an asteroid may be broken into pieces while entering the earth atmosphere but this size asteroids won't do so. That's about three to six times wider than the space rock that penetrated the Earth's atmosphere in 2013 and exploded over the city of Chelyabinsk in Russian Federation, packing 20 to 30 times the energy of the Hiroshima atomic bomb, notes EarthSky.
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"It doesn't take a very large object".
The giant asteroid, estimated to be between 47 and 100 metres in width, was flew by Earth at a speed of 106,000 kilometres per hour.
"First observed at Catalina Sky Survey in Arizona on Saturday, April 14, 2018, the asteroid - which has been labeled 2018 GE3 - swept past us at about half the Earth-moon distance early Sunday morning according to clocks in North America, "EarthSky reports on its website".
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An asteroid called 2018 GE3 passed between our planet and the moon just hours after it was first spotted. "A 10-meter size object already packs the same energy as a nuclear bomb", Andrew Cheng, who led a 2000-2001 mission for NASA to orbit and land on an asteroid, told Fox News at the time.
"Nevertheless, it is a significant asteroid, illustrating how even large space rocks can still take us by surprise", the media outlet pointed out.
"If 2018 GE3 had hit Earth, it would have caused regional, not global, damage, and might have disintegrated in the atmosphere before reaching the ground", Spaceweather.com explained in a Facebook post.
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Was Earth in risk from 2018 GE3?