Sirius helps locate Canis Major constellation this week

This week, stargazers can use Sirius, the brightest star, to locate the constellation Canis Major, also known as the Great Dog. This constellation was first listed by Ptolemy in the 2nd century. To find Canis Major, look for Orion's belt, which points to Sirius. The rest of the constellation can be traced using fainter stars. A dark sky will enhance visibility. In the southern hemisphere, Canis Major is prominent in the evening sky. Observers should face north-west to see it high above.