The Synthesis of "Cosmic Microwave Background"

Discover the Cosmic Microwave Background (CMB), the faint afterglow of the Big Bang that provides a snapshot of the early universe and its origins.

Explore the Recombination Era, the pivotal moment when the universe first became transparent, releasing the light we now see as the cosmic background.

Discover the cosmic afterglow, the faint radiation left from the Big Bang, and what this ancient light reveals about the origins of our universe.

Discover the Big Bang Theory, the leading scientific model for how the universe began from a hot, dense state and expanded into what we see today.

Explore cosmology, the science of the universe's origin, evolution, and ultimate fate. Learn about the Big Bang, dark matter, and cosmic mysteries.

Discover redshift, where light from distant galaxies stretches to redder wavelengths, providing key evidence for the universe's expansion.

Explore the universe, from its Big Bang origin to its vast expanse of galaxies. Discover why this cosmic topic continues to captivate and inspire us.

Explore flux, the fundamental concept for measuring the flow of energy and particles through space, from solar radiation to distant starlight.

Explore the cosmic web, the vast network of galaxies, clusters, and voids that forms the large-scale structure of our universe. Learn how it formed.

Explore the cosmos—the universe in its entirety. Learn about its origins, structure, and the science of cosmology that seeks to understand it all.