Cost to build the Death Star: $852 quadrillion

Here’s the reality-check breakdown:

Based on the density of a modern warship and scaled up, it would take about 1 quadrillion tons of steel to build one Death Star.

The Earth’s iron supply is capable of building 2 billion Death Stars.

It would take 833,315 years to produce enough steel to start work on a Death Star, meaning you’ll be long dead before you’ll ever see it anywhere near operational.