The Latest Breaking News from Henrietta Leavitt

100 years ago, Edwin Hubble proved our Milky Way galaxy isn't alone

A century ago, humans didn't know other galaxies existed. Here's how Edwin Hubble changed that view.

Space · Jan 17, 2025

How do we measure distances across the universe? | Explained

Discover how astronomers measure cosmic distances and use special tape measures to judge the extent of the universe Learn about using the parallax method, standard candles, and standard sirens.

The Hindu · Dec 29, 2023

How fast is the Universe really expanding? Multiple views of an exploding star raise new questions

How did we get here? Where are we going? And how long will it take? These questions are as old as humanity itself, and, if they’ve already been asked by other species elsewhere in the Universe, potentially very much older than that.

The Conversation · May 11, 2023