I'll put it into perspective. Pick up a rock. Now throw it in the air. Make sure when you throw this rock, it leaves Earth's atmosphere. Oh come on it's not that hard. Now imagine doing that with every piece of rock on our little planet. That’s a LOT of energy! But we have one advantage: every rock we get rid of decreases the gravity of the Earth a little bit (because the mass of the Earth is smaller by the mass of the rock). As gravity decreases, it gets easier to remove rocks. So by the final 1000 rocks you'll be throwing them out into space like dandelions.

You can use math to calculate this; how much energy it takes to remove a rock and simultaneously account for the lowering of gravity. If you make some basic assumptions, it takes roughly 200 million trillion trillion Joules. Oh so it's not THAT much John. For comparison, that’s the total amount of energy the Sun emits in one week. It’s also about a trillion times the destructive energy yield of detonating every nuclear weapon on Earth.

But John!! Can't we just use nukes to end the world ?! If you want to vaporize the Earth by nuking it, you’d better have quite the arsenal, and immortality on your hands. If you blew up every nuclear weapon on the planet once every second, it would take 160,000 years to turn the Earth into a cloud of expanding gas.

Even massive collisions can’t vaporize the planet. If Mars just decided, "Oh hey let's go smash into Earth." Earth would still be around. Of course, the collision would melt the Earth all the way down to the core, so the damage is, um, considerable. But the Earth would still be around. So, no matter which way you flip this puppy you can't grow up and blow up the Earth. Hope I didn't crush any dreams!