This is the third installment of the series.In the second episode, we talked about E=mc², which states that mass and energy ...

Space-time is the most powerful idea in modern physics. Yet a bold new philosophical challenge suggests we may not actually understand what space-time is — and that confusion about language is quietly ...

Einstein’s theory of general relativity describes gravity as the curvature of space and time caused by matter and energy.

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

In 1973, John Archibald Wheeler described the relationship between space and matter in two sentences: “Space acts on matter, telling it how to move. In turn, matter reacts back on space, telling it ...

Scientists who have been trying for decades to bridge quantum mechanics and the theory of relativity have come up with a possible solution for quantum gravity. One bold proposal, Group Field Theory ...