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Figure 1-5 The Winter Triangle This star chart shows the view toward the southwest on a winter evening in the northern hemisphere (around midnight on January 1, 10 p.m. on February 1, or 8 p.m. on March 1). Three of the brightest stars in the sky make up the winter triangle. In addition to the constellations involved in the triangle, the chart shows the prominent constellations Gemini (the Twins), Auriga (the Charioteer), and Taurus (the Bull).