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UN International Asteroid Day and planetary defence
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Latest: China readies high‑speed test to strike near‑Earth asteroid
The United Nations formalised 30 June 2026 as International Asteroid Day, recalling the 1908 Tunguska event and urging global awareness of near‑Earth object (NEO) hazards. By mid‑2026, between 16 000 and 36 000 NEOs are