The Lyrids meteor shower begins on April 17 and peaks April 22. Stargazers can see 18 meteors per hour streaking across the ...

Using variable stars as distance markers and the giant telescope on Mount Wilson, Edwin Hubble (then a young and little-known astronomer) was able to show that the Andromeda Nebula was over a ...

Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

On winter evenings, Orion is one of the easiest star patterns to find in the sky. Its identifying feature ... is the Orion Nebula. Throughout the nebula (which is about 30 light years wide ...