Granted, you wish upon a star and suddenly see it fall. It's wonderous, magic, until it grows bigger. And bigger. And bigger. It's an asteroid.
It hits the ground, annihilating everyone closeby. The shockwave spreads around the world killing all surface-dwellers. Some find recluse in their shelter, but humanity is at its knees. But in the toughest of times humans are excellent to adapt. Over hundreds of years the population starts to rise again, civilizations start to form and a new age of exploration takes place.
The incident has radically changed the world as we know, continents have shifted and not before long an expedition to the site of impact is sent out.
A massive crater, larger than anyone can imagine, completely empty. A huge barren wasteland lies inside, completely void of life.
As the crew examine the crater, only one thing is found, a human hand.
It's luke-warm.
I wish I was a better writer.