Japón realizó un ensayo clave de defensa planetaria con la sonda Hayabusa2, que pasó a unos 800 metros de un asteroide cercano a la Tierra.

Mission also aimed at testing technologies needed for planetary defense

Tokyo, July 5 (Jiji Press)--Japan's Hayabusa2 unmanned probe successfully flew past the asteroid Torifune at close range on Sunday, the Japan Aerospace Exploration Agency said.…