Monday, 22 June 2015

The Universe - The Summer Triangle

The "Summer Triangle" is a feature of the northern hemisphere night sky in summer. 

It is not a constellation. The Summer Triangle is an asterism.

It is formed by the brightest stars of three different constellations.

Vega - otherwise called Alpha Lyrae

Deneb - Alpha Cygni

Altair - Alpha Aquilae

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