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

Only a few dozen of these short-lived binaries exist in the galaxy at a time, making the serendipitous find extremely ...

Our satellite hangs out with the heart of the Scorpion, known for its vivid red hue as the Rival of Mars in our sky.

In this episode, Astronomy magazine Editor Dave Eicher invites you to head out during the evening of July 7 and observe the pretty bright Moon passing Antares, also known as Alpha Scorpii. Look sharp, ...