Triangulum the Triangle in northern skies

Triangulum the Triangle in northern skies

The constellation of Triangulum is overhead in the Northern Hemisphere on December evenings. Chart by EarthSky. There are lots of collections of stars in the night sky that can form the shape of a triangle. The giant Summer Triangle is one, and the Triangulum Australe in the Southern Hemisphere is another. Triangulum the Triangle is a constellation in northern skies that you can best spot in late autumn or early winter. It lies to the northeast …