An asteroid named 2019 OK zipped past Earth a few weeks ago, missing it by just 70 000km.
Former American defence secretary William Cohen warned that an asteroid collision with our planet had the potential to wipe out humanity.
Earth is in a constant game of celestial bumper cars, colliding with and obliterating the relatively small space rocks that cross its path. But there’s no doubt that sometime in the future our world will suffer another disastrous cosmic impact and unless we prepare for it we’ll surely become extinct like the dinosaurs of days gone by. FAROUK ARAIE, JOHANNESBURG