A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

The article details various types of deep-sky objects observable by amateur astronomers, including double stars, variable stars, open and globular star clusters, emission, planetary, and reflection ...

Nebulae are some of the most breathtaking sights in the universe — vast clouds of gas and dust where stars are born, or where they meet their spectacular ends. From the delicate wisps of the Veil ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

Like cool pictures of the cosmos? You came to the right place. It's called the Vera C. Rubin Observatory, and even though it’s located in Chile, it's funded and operated by the U.S. government. In a ...

Babylonian astronomers created early star catalogs as early as the 12th century BCE, later expanding these to include celestial motions of the Sun, Moon, and planets by 1000 BCE. The Messier (M) ...

The best JWST images reveal galaxies, nebulae, and cosmic structures in stunning infrared clarity. These James Webb photos ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known ...

This article was originally featured on The Conversation. A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical ...

Chris Impey does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...