Planets don't hang anywhere; they are in place due to various gravitational fields. If something changes with those fields, the position changes. It is predictable using physics/astrophysics.
The big bang and the death of the dinosaurs (most of them, at least) are theories based on all current data. We expect such theories to be changed or even revamped should we discover more evidence.
Religion doesn't allow for change and requires no proof; that is its failing.
Were you here when the big bang happened? What about when a meter hit the earth and killed all the dinos?
Or the ice age?
Do you know all of the creators and builders of all the buildings in the US? I would say no way, but when you see a building, all you know is (there it is) you also know someone planned and created it. Yet when it comes to the earth, and how it hangs in space, along with all other planets, you say it just happened.