The bright star Spica will appear to dance around Earth's moon on the night of May 9. Here's how to catch the celestial pair ...

Astronomical twilight is the transition to fully dark skies, when the sun is between 12 and 18 degrees below the horizon. Volcanic activity at Anak Krakatoa ("Child of Krakatoa") in Indonesia.

Start your summer with a trip to Spiro Mounds Archaeological Center for a special guided tour on Saturday, June 21, one day ...