I felt that the Lord was encouraging me in the spirit to "witness to them." He must mean anyone reading this and to balance out the lighter discussions with the serious messages and warnings of the Bible. What is more important than space travel, is to value this world and heed the dire warnings of the Bible about stewardship. Our calling as Christians, is to share the message of the Bible that God is real, and that He does reveal this to those who seek him. The Earth is about life. And Jesus is about eternal life. We may joke about wrong ideas about the earth, but we should be careful not to make fun of people's beliefs that they may be basing on the Bible. I'm well over 50 and it has not been easy in life to be confronted with beliefs that I felt were stable being challenged. But Jesus himself challenged his disciples to challenge almost everything they believed in light of His Light and truth and presence in the world.
Maturity as a Christian sometimes means strengthening our beliefs by being more flexible in how we see reality and how our views match up with divine reality.
This is a part of humility.
The Bible is not meant to be a coffin, but to help us think outside the box. This makes us stronger Christians, to be able to quote the Bible in a way that leads to victory like Jesus did in dire spiritual warfare.
We all eventually end up facing things that are "not in the instruction manual," and situations that challenge our views of the world, and lead us to higher divine realities. In other words, God has the veto power over humanity. He is the only one who can do this without compromising His own word.
One story in the Bible about this is the owner of the vineyard paying the workers according to His authority and word, that some considered unfair, without compromising His own word. He pretty much said, "I own the vineyard, and don't complain about my decisions.". We will resolve things His way, since divine authority is higher than earthly authority. If people believe the Earth is flat because the Bible says so, He would probably lovingly agree, but lead someone gently into a higher truth. This applies to all beliefs, until they all match divine reality.
And the belief about an abyss in the Bible is real, and a very dire warning for those who fatally resist the light.