Dateline: April 1 2038

In an ironic twist of fate, Nasa’s Double Asteroid Redirection Test (DART) that slammed into the perfectly harmless asteroid Dimorphos while it minded its own business circling the larger asteroid Didymos, is now the target for a real, live deflective mission event by the Planetary Defence Force. The DART impact shortened Dimorphos’ orbit by only a tiny 1% but it upset the delicate binary orbital balance achieved over millennia...

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