When LIGO detected gravitational waves unleashed from two colliding black holes for the first time in science history, it set off a whole new era in astronomy.

The faster you move, the stranger time becomes. By imagining how light travels to two people moving at different speeds, Einstein showed that time isn’t absolute. His thought experiment revealed that ...

To understand gravity, Einstein had to rethink space and time as a single connected fabric. He showed that mass bends this fabric, guiding how everything moves. NOVA is available to stream on pbs.org ...

Einstein’s dislike of quantum indeterminism is well-known. Less well-known are the thought experiments he used to try disprove quantum mechanics. Max Rogers outlines the story of Einstein’s Light Box, ...

Think about it. There may be no greater engine of transformation than the human brain. And throughout history, thought experiments have been the silent engines of intellectual progress, driving ...