Answer:
Probably surreal
Step-by-step explanation:
few people have actually left the planet, and for a human to stand on an extraterrestrial celestial body and look back at our home planet, the only possible way to sum it up in words is surreal.
It would be terrifying and devastating, yet brilliant and beautiful in a sense, a bit of an odd hodge-podge of emotions.
sur·re·al
/səˈrēəl/
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adjective
having the qualities of surrealism; bizarre.
"a surreal mix of fact and fantasy"