The 50-plus-year-old spacecraft was trapped in Earth orbit for decades. Now, it has likely fallen back home, according to the ...

Over the past decade or so, astronomers have speculated about the characteristics of rogue planets in the Milky Way galaxy.

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 ...

A bright Moon dominates the sky, passing two bright stars as Juno reaches opposition and Mercury dips toward the horizon in ...

Living longer is a popular topic. It probably always has been, but now we have better technology to tell us what methods of ...

A ninth planet the size of Neptune may be hidden in the far reaches of the solar system, but the evidence has left some experts skeptical.

Carnegie Science Center has created events and programming for the entire family to celebrate the centennial of planetarium.

A mysterious flash of light lit up the night sky across Utah on Saturday, sparking a wave of excitement and intrigue. For ...

Picture this: a small audience is quietly ushered into a darkened room. They gasp in awe, as a brilliant night sky shines ...

Venus will partner up with the giant planets Saturn and Neptune to form a line up in the pre-dawn sky on May 8, with ...