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Astro Bob

Sirius Is The Brightest Star In The Night Sky, Seriously

6 Mar 2019, 17:04 UTC
Sirius Is The Brightest Star In The Night Sky, Seriously NASA, ESA and G. Bacon (STScI)

Sirius really shines this month. If you know where to look you can spot it just before sunset (more on that in a moment). Otherwise the star is plainly visible in a deep blue sky just a half-hour after sunset. Star brightness is determined by the magnitude scale, and Sirius sits at the top of the heap at magnitude –1.5.

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