Summer Triangle

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summer triangle asterism

The Summer Triangle is an asterism formed by Vega, Altair and Deneb, the brightest stars of the northern constellations Lyra, Aquila and Cygnus. With three… Read More »Summer Triangle


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altair star,alpha aquilae,brightest star in aquila

Altair, or Alpha Aquilae, is the brightest star in the constellation Aquila, the Eagle. It lies only 16.7 light years from Earth. It has a… Read More »Altair