You can see them catch the plane. You could travel with them. Thus it is easy to prove that a god was not what got them from Australia to America
Galaxiom said pretty much what I was going to regarding this. When you're dealing with people who believe in an all-powerful, all-knowing deity who is apparently mischievious, its hard to rule anything out.
You can't disprove that claim. However, disproving a god or God at the kick off point will knock that claim over. The way to disprove a god or God was involved is the same deal as the trip from Austalia to America.
Proof is only proof when people are using some reasonable system to measure it. As the studies/polls I linked earlier showed, and you agreed, the majority of educated people tend to be nonbelievers. This proves to me that education and religion are at opposite ends of the spectrum. The more educated people get, the less religious they tend to be.
Other people could look at the same exact studies/polls and draw completely different conclusions, thus it doesn't prove anything to them. In fact, if they refuse to question their own beliefs/facts, then they won't accept any proof.
Atheists often claim we are not born "religious" However, I think it becomes a default position. Its a bit like evolution in the sense that it is easy to see the relationship between different animals so then the gaps are filled in.
You say easy, I say simplistic. The fact that there have been thousands of different religions throughout history, all which were based around what a society treasured/feared, tells me that religion is a man-made concept.
It would have to either be ignorance or arrogance to think that you've stumbled upon the 1 correct religion and the thousands of other ones were wrong. Which is why, once again, religion and education are at opposite ends. If you actually studied the evidence behind the major religions, you can see where they borrowed from previous religions.
Is it possible that there is a being or beings that are well above us or maybe in the past.
That's still not clear enough. You're going to have to explictly define "well above us". Is it possible that there is alien life out in the universe somewhere that can do things we cannot? I'd wager so. Do I think they use magic to do it? No.
I think the Bible has a basis in truth but like other stuff from the long distant past only the general theme will be correct. What I am trying to say is that things happened and the Bible was a response.
If you get your hands on an original copy of the bible, before it was translated several times and edited on whim, then you could probably find some kernels of truth from a historical perspective.
Do you believe the earth is the only place in the universe with life like us?
I think the odds are against that. With so vast a universe/galaxy, I think it would definitely be plausible that there is intelligent life on another planet somewhere.