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Estimates say that a vehicle-sized asteroid explodes in our atmosphere about once per year, often too high to make a noticeable impact.
But in 2013, a small meteor exploded just 20 miles above Chelyabinsk, Russia that sent over 1,200 people to the hospital.
Today, a team of experts from NASA’s Planetary Defense Coordination Office works diligently to find asteroids that travel near Earth’s orbit.
They’ve released a plan in order to prevent a large-scale asteroid impact, and part of this plan is the DART mission.
DART aims to travel to the asteroid Didymos in 2021 to demonstrate the tech that could be used to redirect an asteroid headed for Earth.
It's a collaboration with the European Space Agency (ESA), whose Hera spacecraft will follow up and observe the results of the impact on the asteroid and map Didymos's surface and interior structure.
See the full article on NASA's plans to stop an asteroid headed for earth, here: https://www.freethink.com/shows/guardians-of-the-apocalypse/asteroid-headed-for-earth
For more information on the ESA's Hera spacecraft: http://www.esa.int/Safety_Security/Hera/Hera
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