This Week on Science Seen

Georges Lemaître and Albert Einstein

All One

The idea of the universe as a single thing has roots in ancient societies. It speaks to our existential questions: Where are we? What is our relation to the world? In the fifth century BCE, Zeno of Elea ponders whether the world is one thing or many. He says the concept of plurality is a […]

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The Problem of the Indefatigable Aether

To the Greeks the aether was the substance of the clear sky. Other aethers had exotic properties. Aristotle’s aether had a tendency to move in circles, thereby helping him explain the motion of the stars. Aristotle’s aether died out long ago. But some vestige of his thinking stuck around. The distillation of the aether’s meaning […]