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1. en.wikipedia.org › wiki › SiriusSirius - Wikipedia

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   2 giorni fa · With an apparent magnitude of −1.46, Sirius is the brightest star in the night sky, almost twice as bright as the second-brightest star, Canopus. From Earth , Sirius always appears dimmer than Jupiter and Venus , and at certain times also dimmer than Mercury and Mars . [73]

   • Age: 242±5 Myr
   • Mass: 2.063±0.023 M☉

   • Constellation: Canis Major

2. en.wikipedia.org › wiki › VegaVega - Wikipedia

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   2 giorni fa · Vega is the brightest star in the northern constellation of Lyra. It has the Bayer designation α Lyrae, which is Latinised to Alpha Lyrae and abbreviated Alpha Lyr or α Lyr. This star is relatively close at only 25 light-years (7.7 parsecs) from the Sun, and one of the most luminous stars in the Sun's neighborhood.

   • B−V color index: 0.00
   • Mass: 2.135±0.074 M☉

   • Constellation: Lyra

3. en.wikipedia.org › wiki › Stellar_classificationStellar classification - Wikipedia

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   2 giorni fa · A simple chart for classifying the main star types using Harvard classification. In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

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5. www.space.com › 16149Night sky, May 2024: What you can see tonight [maps] | Space

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   1 mag 2024 · Once the sky darkens several hours later, Virgo's brightest star Spica will be visible to the lower right (or celestial southeast) of the very bright moon. Binoculars (orange circle) will...

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6. earthsky.org › brightest-stars › bright-orange-arcturus-useArcturus, the brightest star of the northern sky - EarthSky

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   9 mag 2024 · Bottom line: The 4th-brightest star in all the sky is Arcturus, a brilliant orangish star that’s easy to find in Northern Hemisphere spring skies with the aid of the Big Dipper. 24 X 5.5k...

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7. earthsky.org › brightest-stars › best-regulus-the-heart-of-theMeet Regulus, Leo the Lion’s Heart - EarthSky

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   15 mag 2024 · Leo the Lion’s brightest star is Regulus, the Lion’s Heart. Regulus is the dot at the bottom of a backward question mark pattern of stars, called the Sickle. An easily identifiable triangle...

8. earthsky.org › astronomy-essentials › visiblVisible planets and night sky guide for May - EarthSky

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   3 giorni fa · May 22 evening: Moon near Antares. On the evening of May 22, 2024, the almost full moon will lie near the bright red star Antares in Scorpius the Scorpion. They’ll be visible until dawn. Chart...