To map the universe, astronomers string together distance measurements to ever-farther objects, like climbing rungs on a cosmic ladder. Skip to content Introducing the all-new Astronomy.com Forum!

An engrossing look at how knowledge has grown alongside our technologies, and how we might unlock the puzzles of the Universe ...

New James Webb Space Telescope results have revealed that there may not be a Hubble tension after all. But contradictions ...

This week’s image from the Hubble Space Telescope shows this handy distance-measuring tool in all its glory. Related: Best new movies to stream on Netflix, Hulu, Prime Video, Max (HBO), and more ...

The cosmic distance ladder. Let's climb it and learn our true place in space. The first ancient sky watchers knew that our moon, the planets, and the stars were incredibly far away.

Standard Candles and the Cosmic Distance Ladder. In 1924, observing the night sky through what was then the world's largest ...

The cosmic distance ladder can help cosmologists measure the rate at which the universe is expanding, a value called the Hubble constant, named in honor of astronomer Edwin Hubble.

The best direct measurement of H0 uses a "cosmic distance ladder," whose first rung is set by the absolute calibration of the brightness of Cepheids, now recalibrated by the EPFL study.

James Webb captures gorgeous image of a Cosmic Tornado The James Webb Space Telescope has captured another stunning image of space, this time showing the dramatic scenes around a baby star.

Climbing the cosmic distance ladder. The first step is being able to calculate how far away from us distant objects are —and figuring out cosmic distances is rarely a straightforward task.

We find that the Hubble measurements remain reliable as we climb farther along the cosmic distance ladder," said Riess. Do you have a tip on a science story that Newsweek should be covering?