It is not an issue of belief.
It is an issue of how you determine what you know.
If the way you determine it is by trusting experts you will be in a world of hurt.
That is practical advice for the real world.
Practical advice is stop wasting precious earth’s resources on cosmic travel. The GPS satellites are great, they are a profitable venture. Military satellites serve important function. But trying to set up colonies on mars or moon is a boondoggle. And to dream of travel to planets beyond our solar system is pure fantasy.