…but it turns out that flying a modified space shuttle of square-jawed expert miners to implant a big nuclear bomb is not the best way to deflect an asteroid. Instead, use “mirror bees”:
The best method, called â€œmirror bees,â€ entails sending a group of small satellites equipped with mirrors 30 to 100 feet wide into space to â€œswarmâ€ around an asteroid and trail it, Vasile explains. The mirrors would be tilted to reflect sunlight onto the asteroid, vaporizing one spot and releasing a stream of gases that would slowly move it off course. Vasile says this method is especially appealing because it could be scaled easily: 25 to 5,000 satellites could be used, depending on the size of the rock.
Maybe this could be the sequel to WALL-E?