In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

The current record holder is a galaxy a staggering 34 billion light years away, seen just 200 million years after the big bang, when the universe was 20 times smaller than it is now. Edwin Hubble ...

A supercluster is usually composed of hundreds or even thousands of clusters of galaxies, and these clusters are ...

American astronomer Edwin Hubble was the one who made the discovery ... thus proving that it had to be another galaxy. After spending several more months peering at Andromeda, finding another ...

And why can't we figure that out? In 1929, an astronomer named Edwin Hubble found that every single galaxy outside of the Local Group -- our neighbors -- was speeding away from us. Galaxies like ...

In October 1923, using a telescope in California, Edwin Hubble was studying a nebula near ... that he concluded that it must be a galaxy in its own right. He subsequently began to classify all ...

When we gaze up at the night sky, it’s hard not to wonder about the vastness of the universe and its origins. The universe, ...

Superstructures are extremely large galactic structures containing groups of galaxy clusters ... referred to as the Hubble constant — the rate at which the universe is expanding, named for the ...

A stunning Hubble image showcases a spiral galaxy seemingly intertwined with a nearby star—but looks can be deceiving! This ...

NGC 5042 is a breathtaking spiral galaxy showcasing a brilliant mix of ancient stars, young blue clusters, and vibrant pink H ...