Three brilliant stars. One massive triangle. Once you see it, you'll never unsee it. Welcome to winter sky navigation. ⭐△ The Winter Triangle. Sirius at the bottom (brightest star in the night sky, blue-white, impossible to miss). Betelgeuse upper left (red supergiant in Orion's shoulder, distinctly orange-red). Procyon upper right (yellow-white, 8th brightest star). These three form a massive asterism covering huge section of southern sky. This isn't subtle. Once you know where to look, the tri