Gravitation

Black hole paradox remains unexplained

Environment

Albert Einstein’s groundbreaking ideas about relativity are almost a century old, but recent science is challenging the boundaries of the theory. Joseph Polchinski’s theory of what would happen if a person enters a black hole contradict predictions made with Einstein’s model, and have yet to be refuted.

Discovering dark matter

Environment
The World

Gravity: What’s Up Is Down

The World

On the hunt for dark matter

Environment