Astronomers measure a star’s brightness using the apparent magnitude system, where lower values indicate brighter stars. Sirius, Canopus, Alpha Centau ...
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 ...
Sirius, the brightest star ... Alpha Centauri is a triple star system located about 25 trillion miles away. Its brightest star, Alpha Centauri A, is similar to the Sun in both size and brightness.
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