The Summer Triangle is formed by three vertices, Deneb, Altair, and Vega. Deneb is the nineteenth brightest star in the night sky, Altair is the twelfth brightest star, and Vega is the fifth brightest star.
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The Summer Triangle is formed by three vertices, Deneb, Altair, and Vega. Deneb is the nineteenth brightest star in the night sky, Altair is the twelfth brightest star, and Vega is the fifth brightest star.
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