Scholars show how multiple planet movements tie into the 819-day Mayan calendar. The 819 days of the calendar must be viewed across a 45-year time period to fully understand. The movements of all ...

In a remarkable discovery, astronomers have unearthed a six-planet system orbiting the star HD 110067, where the celestial ...

Aging stars may be destroying the giant planets orbiting closest to them, according to a new study by astronomers at UCL and ...

If you're up early enough, you will be able to witness a rare show in the sky. Four planets — Mars, Venus, Jupiter and Saturn — are aligning and the journey started early Sunday morning, NBC News ...