RE: Christians shouldn't mince words with Science.

Actually, while no one claims the earth is flat, we do live under a dome of sorts and the Truman Show scenario is a fairly good analogy.

When the servant of the man of God got up and went out early the next morning, an army with horses and chariots had surrounded the city. "Oh no, my lord! What shall we do?" the servant asked. "Don't be afraid," the prophet answered. "Those who are with us are more than those who are with them."
And Elisha prayed, "Open his eyes, LORD, so that he may see." Then the LORD opened the servant's eyes, and he looked and saw the hills full of horses and chariots of fire all around Elisha. - 2 Kings 6:15

The human race is indeed of keen interest to many unseen eyes.

For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places. - Ephesians 6:12