Planck Cosmic Microwave Background with Cold Spot inset


Debate on Universe’s Cold Spot Heats Up

A new galaxy survey suggests that a supervoid isn’t responsible for the Cold Spot seen in the cosmic microwave background — the oddity may have a far more ancient origin.


Shadow of a Supervoid

Scientists might have discovered the source of the mysterious Cold Spot in the Cosmic Microwave Background: an enormous supervoid.

Big nothing in space


Cold Evidence for a Cosmic "Texture"?

A ripple in the cosmic background radiation hints at an irregularity in spacetime. . . maybe.