Astronomers measure a star’s brightness using the apparent magnitude system, where lower values indicate brighter stars.

This week’s first small-telescope target is Sirius B, the companion to the night sky’s brightest star, Alpha (α) Canis Majoris. American telescope-maker Alvin Graham Clark discovered that ...

How to spot Adhara in the night sky Adhara is located in the southern celestial hemisphere within the constellation Canis Major, famously home to Sirius, the brightest star in the night sky.