NASA explained: “Very few of these bodies are potential hazards to Earth, but the more we know and understand about them, the better prepared we will be to take appropriate measures if one is heading our way.
“Knowing the size, shape, mass, composition and structure of these objects will help determine the best way to divert a space rock found to be on an Earth-threatening path.”
NASA first observed Asteroid DN’s close approach on February 26 2019, meaning it has been discovered in the last two weeks.
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