Instead of relying on the expansion of high-pressure steam, the Stirling engine is a closed system with a working gas, usually air, that generates power by having one part of the engine cycle ...

Engineers have built a modern Stirling engine that quietly turns the cold of outer space into steady mechanical power, using the night sky as a heat sink instead of a fuel tank. By radiating heat away ...

Here’s what you’ll learn when you read this story: Stirling engines, which have been around for centuries, leverage temperature differentials in a gas to do light mechanical work. A new study ...