The Andromeda galaxy is the galaxy next door, a very faint, fuzzy thing in the night sky, larger than a full moon. Textbooks ...

A decade of observations by NASA’s Hubble Space Telescope has produced the sharpest and most detailed images of the Andromeda ...

Yerkes Observatory near Lake Geneva is more than 125 years old, is the site of numerous scientific discoveries, is home the ...

Particular stars called Cepheid variables allow astronomers to determine distance, and Hubble spotted one of these within M31.

Our galaxy may reside in a billion-light-year-wide cosmic bubble that accelerates local expansion, potentially settling the long-running Hubble tension. Galaxy counts reveal a sparsely populated ...

Last week, standing with the Bible skeptic Michael on the common ground that science affords, we continued to look to the ...

Test your knowledge of U.S. astronomers and their groundbreaking discoveries. Challenge yourself with this fun quiz and explore the universe!

Earth and the entire Milky Way galaxy might be sitting inside an enormous, mysterious void—a giant cosmic hole making our universe expand faster right here than anywhere else. This unusual idea, ...

Earth and our entire Milky Way galaxy may sit inside a mysterious giant hole which makes the cosmos expand faster here than ...

Astrophysicists suggest our galaxy may lie inside a "cosmic void" - offering a new explanation for the universe’s conflicting ...

Scientists have proposed a wild new theory at the Royal Astronomical Society's National Astronomy Meeting (NAM) in Durham - ...

For the photographers honored at the 2025 Astronomy Photographer of the Year awards, the universe is their muse. From our fiery sun to dazzling aurorae, and a sparkling Milky Way to captivating ...