Once you spot Sirius, the rest of Canis Major can be traced using fainter stars in the constellation
This week we will use the brightest star in the night sky to find a less than obvious constellation.
Canis Major, the Great Dog, was included in Ptolemy’s 2nd-century list of 48 constellations in his great work Almagest. This became the standard reference work for astronomy for a millennium, providing the basis on which the northern and equatorial skies are still divided into constellations.
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