Everybody duck! A cannonball black hole fired from the centre of our galaxy is heading our way at a brisk 400,000 km/h.

No worries. The black hole is 6000 light years away from us and is unlikely to come any closer than 1000 light years. But how long do you think it will be before somebody puts up a cheap TV movie on the premise? Poor Phil Plait will probably turn in his grave, and he’s still living.

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