Immolating Duplicating Machines
How does something the size of a housecat save the solar system? Well, the I.D.M, or Immolating Duplicating Machine, is rather fond of big families. IDMs are the 'weapons' of a system of small very inexpensive satellites that are released to corners far and near within the solar system. They monitor, and they wait. Upon verification from Earth, a satellite launches an IDM at any threatening heavenly body. Upon touchdown, the IDM begins to fragment the meteor into tiny pieces which it vacuums into it's belly for processing. Then, it uses those raw materials to build a relatively exact duplicate of itself upon it's back _while_ it feeds. Like inkjet technology in 3D, it lays out the parts of the complex duplicate tiny dot by dot. Then, there are two. The reproductive process continues exponentially with each one turning the raw materials of the meteor into another eating machine. A handful quickly becomes an army. Almost any object can be eaten within a few days, and when all that is left is a congomerate of IDMs, they disperse into empty space.
I'll probably revise once I see problems come morning. The idea is based on the concept of a von Neumann, or self-replicating machine.
Thanks for looking,