Gemini, one of Ptolemy's ancient constellations, is named for the Greek twins Castor and Pollux, which are also the names of two of its stars.

Castor, the second-brightest star in the constellation Gemini, is one of the most luminous stars over Earth and a key target for skywatchers, showing there is often much more to stars than meets ...

Pollux and Castor are two fairly bright stars not far apart on the face of the night sky, prominent on April evenings. These two are considered the “heads” in the constellation, Gemini the Twins.

The constellations help us find our way around the sky, ... Gemini's head stars, Castor and Pollux (labeled "2" below), stand out in the sky due to their brightness. Cassiopeia ...

This week, a remarkable celestial alignment will occur in the western sky, providing an exciting opportunity for stargazers.

Castor became one of the finest horsemen in the land, and Pollux became a championship boxer. The constellation Gemini is also the backdrop for the annual Gemini meteor shower that peaks the night ...

Tonight's gibbous moon can help guide skywatchers to two iconic stars in the night sky. On Wednesday (March 29), the moon will appear just below the two twins of the Gemini constellation, Castor ...