Which Titan was condemned to hold up the sky?

The story behind the answer

Atlas. After the Titanomachy—the war between Titans and Olympians—Zeus condemned Atlas to hold up the heavens at the western edge of the world, not the Earth itself. Later art shows him bearing a celestial sphere, which fuels the common misconception. His burden is linked to places like the Atlas Mountains and myths like Heracles briefly taking the load.

Why not the others? Cronus led the Titans and was overthrown; Prometheus defied Zeus by giving fire to humans; Hades is an Olympian, ruler of the Underworld, not a Titan. Memory tip: Think “atlas” the book of maps—just as an atlas supports world maps, Atlas supports the sky above the world.