Are we on the verge of mining metals from the asteroids above Earth? This question, once confined to science fiction
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This month NASA’s DART spacecraft will collide with the smaller of the two Didymos asteroids in deep space, attempting to shift its orbit in what will be humankind’s first test of the ‘kinetic impactor’ planetary defence technique. Meanwhile, down on the ground, ESA’s follow-on mission to Didymos has reached its own crucial milestone.
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When NASA’s DART spacecraft launches on 24 November on a world-first mission to deflect an asteroid,
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