Space is the final frontier because most of humanity does not have the means to prove its existence as taught.
Control the means.
The means to an end is them controlling the desired outcome.
Who controls them?
The prince of the power of the air, that ancient fallen one and his ilk.
He was a liar from the beginning.
Our choices are our power. So why do we keep failing?
Sin
No matter how man has tried to tap dance his way out of it, this continues to remain the verifiable case.