The space travel not possible part is in reference to the firmament part of the bible quote, imo The firmament showeth his handy work, according to people who believe the earth is flat, is when the truth about the firmament above our heads is revealed, iirc
If you want to explore further, or just care to go down the rabbit hole for any reason, here is a thirteen part series mostly revolving around flat earth topic but talks about many of the big ones along the way, ie pizzagate, the Illuminati, etc
The space travel not possible part is in reference to the firmament part of the bible quote, imo
The firmament showeth his handy work, according to people who believe the earth is flat, is when the truth about the firmament above our heads is revealed, iirc