December 14, 2021
Tonight you will find the Summer Triangle low in the west at 7 pm. This summer asterism is seen most of the year, but summer is when we see it the best. The constellations and asterisms we use are a reminder of how the night sky can be used to track the season. The Summer Triangle in the west after sunset is a sign that winter is near.
The stars Altair, Deneb and Vega make up the summer asterism known as the Summer Triangle. Image created using Stellarium.