So it is a fact that the earth was created by a big bang?
Oh brother.. Way to grossly over simplify things..
The earth was created via dust and other things conglomerating through gravity and it became geologically active from space bombardment.
Don't try and insert grabage like creation and intelligent design wherever there's a gap, as there are still things we're discovering everyday. Me saying a purple dinosaur created everything is as valid as your god.