A celestial sign that summer has arrived now appears in the eastern sky after dark. We know it as the Summer Triangle, created by three bright stars: Vega, Altair and Deneb.

In an ancient Chinese love story, Deneb represents the magpie bridge over the Milky Way, which allows the separated lovers Altair and Vega to be reunited on only one summer night each year.

The brightest of the stellar trio — and highest in the sky — is Vega, the most prominent star in the tiny c ...

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