The Synthesis of "cosmic ladder"

Discover the parallax effect, a simple yet powerful method astronomers use to measure the vast distances to stars and galaxies in our universe.

Discover standard candles, astronomical objects with known brightness used by scientists to measure vast distances across the universe and map its expansion.

Discover cosmic calibration, the method of measuring vast distances in space to understand the universe's expansion and solve cosmic mysteries.

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.

Discover Cepheid variables, the pulsating stars that act as cosmic yardsticks, allowing astronomers to measure vast distances across the universe.

Discover the cosmic web, the largest structure in the universe. Learn how this vast network of galaxies and dark matter shapes everything we know.

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