If you fire a cannon ball up into the sky with enough speed and force, the earth will have turned enough to have the ground curved away from it. The ground is constantly curving away as the cannon ball falls, meaning it's now in perpetual free-fall (aka in orbit). But if the cannon ball were to suddenly stop, it would fall straight back to Earth. So, like the cannon ball, if the Earth were to stop its orbit around the sun it would crash into it. Bhatia claims the fall would take around 64 days, but he assures us that we'd all be dead before that happens. Until then, our journey toward the sun would be an uncomfortable ride.