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 ...

Test your knowledge of U.S. astronomers and their groundbreaking discoveries. Challenge yourself with this fun US astronomers ...

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

The Andromeda Galaxy, also known as M31, is more than just a faint smudge in the night sky; it’s a colossal spiral galaxy, ...

Dark matter is being thrown off the table with this new theory - simpler, and it relies on something that can be seen. Cosmic ...

From the discovery of gravity to the first mission to defend Earth from an asteroid, here are the most important physics ...

Recent studies indicate that the universe may be decaying or expanding more rapidly than expected, raising questions about ...