美国航天局的DART飞行任务成功地改变了小行星Dimoros的轨道,证明动能撞击可以使小行星偏转。 NASA’s DART mission successfully altered asteroid Dimorphos’ orbit, proving kinetic impact can deflect asteroids.

美国航天局的DART飞行任务成功地改变了小行星Diformos围绕太阳的轨道,标志着人类首次有意改变天体的路径。 NASA’s DART mission successfully altered the orbit of asteroid Dimorphos around the sun, marking the first time humanity has deliberately changed a celestial body’s path. 该航天器于2022年9月与Dimormos相撞,将其轨道周期缩短了0.15秒,并在两年内将轨道移动约2,360英尺。 The spacecraft collided with Dimorphos in September 2022, reducing its orbital period by 0.15 seconds and shifting its trajectory by about 2,360 feet over two years. 科学家利用全球望远镜观测证实了这一变化,确认动能影响是一种可行的行星防御战略。 Scientists confirmed the change using global telescope observations, validating kinetic impact as a viable planetary defense strategy. 撞击弹射出约3 500万磅的碎片,使动力转移翻了一番。 The impact ejected an estimated 35 million pounds of debris, doubling momentum transfer. 研究人员强调,早点做出小小的改变比最后一刻做出干预更有效. Researchers emphasize that early, small deflections are far more effective than last-minute interventions. 11月抵达的欧洲航天局赫拉任务将详细研究其后果。 The European Space Agency’s Hera mission, arriving in November, will study the aftermath in detail.