Just like there are 50 U.S. states, each with well-defined boundaries, 88 bounded constellations dot the celestial sphere. Of these about 55 of them are visible from mid-northern latitudes and 59 from ...

This photo features the bright, pentagonal constellation Auriga the Charioteer, which is visible in the northeastern sky at nightfall in early January. It's one of 88 constellations in the National ...

Have you ever noticed a constellation while driving at night and wondered what it was? Or looked up after dark and wondered what you were looking at? The night sky appears is constantly changing, ...