What If Earth Froze Overnight?

Overnight, our planet has gone from a pale blue dot to a glistening white snowglobe. Stretches of Earth have become frozen wastelands that are completely inhospitable...

What If You Fell Into a Black Hole?

How much do you know about black holes? What would happen if you fell into one? Say one day you were exploring space looking for a new planet for humans to inhabit, but...

What If Every Planet Had a Twin?

Our Solar System has eight planets, a few dwarf planets and more than 200 moons. But wait. Are you seeing double? Or did every planet suddenly get a twin? Where would...

What If South America Disappeared?

It’s been over 200 million years since South America broke off Africa into its own continent. But now it’s behaving very strangely. It’s taking on water and going down...