<\/figure>\n<\/p>\nHiding somewhere in the gloom of space, there is a gigantic asteroid on a collision course with our planet. If we don\u2019t spot it and somehow thwart its arrival, it will pierce Earth\u2019s atmosphere at 60,000 kilometres per hour and hammer into the ground, vaporising anything it touches.<\/p>\n
With millions of asteroids hurtling through the inner solar system, the threat is inevitable: sooner or later, an impact will happen. But that doesn\u2019t mean Earth has to be a sitting duck. A global community is engrossed in planetary defence, carefully planning how to fend off these extraterrestrial interlopers when they show up \u2013 or at least minimise the carnage.<\/p>\n
Among other things, this work has involved scanning the sky for threats and testing missions to knock asteroids off course. But it also includes a surprising amount of role-playing, where teams war-game asteroid impact scenarios. \u201cIn the real world, we haven\u2019t really gotten to this stage where we actually have to design and build missions, so that\u2019s why we need these exercises,\u201d says NASA\u2019s Paul Chodas, who runs many of the role-plays. \u201cThey make you think about details that you would not otherwise think about.\u201d<\/p>\n
Over the coming paragraphs, you will be in the hot seat in a choose-your-own adventure version of one of these role-playing games. You will decide how to react as the asteroid bears down upon us. Whether you opt to slam a spacecraft into it, use sunlight-absorbing paint to shift its path, or simply blow it to smithereens, you will find we have more options\u2026<\/p>\n<\/p><\/div>\n
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