Pollux, one of the “twins” of Gemini, is half-way up the western sky at nightfall, to the left of the other twin, Castor. Pollux is the brighter of the two and shines with an orange color. The color means its surface is much cooler than the Sun’s.
Pollux, one of the “twins” of Gemini, is half-way up the western sky at nightfall, to the left of the other twin, Castor. Pollux is the brighter of the two and shines with an orange color. The color means its surface is much cooler than the Sun’s.