Meteor Heads

Within the deep Chasm's of Terraria, lay's an orb that creates either something evil, or something awesome. When you hammer that orb into pieces, with any hammer of your choice, 3 things may occure: 1: You will receive an orb of light. 2: The boss, Eater of Worlds will spawn (If it is your 3rd orb you have smashed) or 3: Within time a meteorite will land within an unknown area of your world. When you reach this "Meteorite" you will notice a bunch of stone which is called "Meteorite!" Sadly, this "treasure" isn't what you would call "free." In order to receive these wonderful goodies, you have to fight off the Meteor Heads that randomly spawn wherever there is meteorite. So it's common sence that you don't want to make a house out of meteorite, unless you want a lot of problems.

Meteor Heads are these circle-type mobs (See picture on the right) that fly around in the air that follow you constantly around, until a certain amount of meteorite has been mined (95%). Oh, and that's not the good part! The Meteor Heads can fly straight through walls so in this case making a giant box to cover yourself, isn't going to work this time! Meteor Heads do 24 damage if you have no armor on, so make sure you have you healing potions, and armor handy.

A good tip is, while mining the meteorite, swing the pick (gold or better) towards the Meteor Heads. This will make life a whole lot easier.