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What is a constellation?

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What defines these clusters of stars in the sky as constellations? read more

Newer constellations in the far southern sky were added much later during the 15th to mid-18th century, when European explorers began travelling to the southern hemisphere. Twelve important constellations are assigned to the zodiac, where the Sun, Moon, and planets all follow the ecliptic. read more

Although the stars in any given constellation may look like they're neighbors, they can actually be many light-years apart, and if seen from another part of the galaxy they would form different groups and shapes altogether. read more

Since different constellations are visible at different times of the year, you can use them to tell what month it is. For example, Scorpius is only visible in the northern hemisphere's evening sky in the summer. read more

Constellations are patterns in the night sky often formed by the most prominent stars to the naked eye. Technically a constellation defines not just the group of stars that form their patterns but also the region of sky in which it rests. read more

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