Sirius is the brightest star in the night sky with a visual apparent magnitude of -1.47,almost twice as bright as Canopus,the next brightest star. Sirius is bright due to both its intrinsic luminosity and its closeness to the Sun. At a distance of 2.6 parsecs,(8.6 light-years),the Sirius system is one of our near neighbours | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Chumack, John |
Taille de l’image : | 3072 px × 2048 px |
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