The problem is the asteroid had been spotted so late that, had it been on a collision course, we couldn't have done anything to stop it. Just recently the us congress upgraded the search and established a new unit within NASA to carry it out. It's a blockbuster that sets up the world's worst nightmare. A chunk of rock kilometres across is hurtling towards earth at a frightening speed. It kills millions on impact.
Thousands drown as tsunamis sweep whole continents.
Dust will soon cover the planet, and millions more will starve as ecosystems collapse. But this is not just a Hollywood scenario. It's a question of when. So the probability of an impact is one. It will happen we just don't know when and, from my perspective, I hope we learn about any potential impact as soon as possible.