NASA scientists are using one of the agency's most powerful supercomputers to build 3D models of potential asteroid impact scenarios.

NASA hope the models will help emergency responders and other decision makers prepare for and prevent the consequences of life-threatening asteroid impacts.

The meteor that exploded in the sky above the Russian city of Chelyabinsk in 2013 -- shattering windows and shaking buildings -- served as a wakeup call for many. The Chelyabinsk explosion was proof that an asteroid fragment large enough to do damage can evade the eyes of astronomers, and that a meteor doesn't need to directly strike Earth to cause destruction.

Scientists at NASA's Ames Research Center in Silicon Valley used special modeling software to generate a range of potential impact scenarios based on the Chelyabinsk asteroid event. The Pleiades supercomputer allowed scientists to consider the potential impacts of a large range of meteor sizes traveling at different speeds and angles.

As part of its Asteroid Threat Assessment Project, NASA will share the conclusions of its modeling efforts with officials at government agencies, universities and elsewhere responsible for preparing emergency response plans related to an impact event.

"Asteroid impacts are one of the only natural disasters we can actually predict and then take action to protect people," aerospace engineer Michael Aftosmis said in a news release.

Scientists at the European Space Agency are also building 3D models of asteroids. They're creating tangible, real-life models using a 3D printer. Researchers at ESA hope the models will help them prepare to put another lander on the surface of an asteroid.

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Are asteroids humanity's 'greatest challenge'?
Paris (AFP) June 28, 2017
Throughout its 4.5-billion-year history, Earth has been repeatedly pummelled by space rocks that have caused anything from an innocuous splash in the ocean to species annihilation. When the next big impact will be, nobody knows. But the pressure is on to predict - and intercept - its arrival. "Sooner or later we will get... a minor or major impact," Rolf Densing, who heads the Eur ... read more

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