Cara keempat gagal dilaksanakan oleh Brain. Ia masih menyimpan tiga cara lagi untuk menghancurkan dunia. Mari kita simak pembicaraan antara dirinya dengan Pinky, tentu saja di Acme Labs:
Pinky: Malam ini apa yang akan kau lakukan Brain?
Brain: Sama seperti semalam sebelumnya Pinky, aku ingin menghancurkan dunia.
Brain dengan sangat yakin membuka gulungan kertas berisi cara menghancurkan dunia dan menunjuk angka tiga.
3. Pulverized by impact with blunt instrument
You will need: a big heavy rock, something with a bit of a swing to it… perhaps Mars
Method: Essentially, anything can be destroyed if you hit it hard enough. ANYTHING. The concept is simple: find a really, really big asteroid or planet, accelerate it up to some dazzling speed, and smash it into Earth, preferably head-on but whatever you can manage. The result: an absolutely spectacular collision, resulting hopefully in Earth (and, most likely, our "cue ball" too) being pulverized out of existence – smashed into any number of large pieces which if the collision is hard enough should have enough energy to overcome their mutual gravity and drift away forever, never to coagulate back into a planet again.
A brief analysis of the size of the object required can be found here. Falling at the minimal impact velocity of 11 kilometers per second and assuming zero energy loss to heat and other energy forms, the cue ball would have to have roughly 60% of the mass of the Earth. Mars, the next planet out, "weighs" in at about 11% of Earth’s mass, while Venus, the next planet in and also the nearest to Earth, has about 81%. Assuming that we would fire our cue ball into Earth at much greater than 11km/s (I’m thinking more like 50km/s), either of these would make great possibilities.
Obviously a smaller rock would do the job, you just need to fire it faster. A 10,000,000,000,000-tonne asteroid at 90% of light speed would do just as well. See the Guide to moving Earth for useful information on maneuvering big hunks of rock across interplanetary distances.
Earth’s final resting place: a variety of roughly Moon-sized chunks of rock, scattered haphazardly across the greater Solar System.
Brain: Pinky, apa kau memikirkan apa yang kupikirkan?
Pinky: Sepertinya begitu Brain, tapi…
Rencana yang tampak mengerikan… Apakah Brain berhasil mendapatkan batu besar itu malam ini? Kita lihat jawabannya esok hari…