Ma Lina
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4 days ago · 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.
4 days ago · 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. It is the fifth-brightest star in the night sky, and the second-brightest star in the northern celestial hemisphere, after Arcturus.
4 days ago · Its brightest star is called Deneb, the Swan’s Tail. And the constellation Cygnus contains one of the most beloved double stars in the sky, blue and gold Albireo.
4 days ago · It is the brightest star in the constellation and the third-brightest in the night sky, outshone by only Sirius and Canopus. α Centauri A has 1.1 times the mass and 1.5 times the luminosity of the Sun, while α Centauri B is smaller and cooler, at 0.9 solar mass and less than 0.5 solar luminosity.
Jun 27, 2024 · Its brightest star is called Deneb, the Swan’s Tail. And the constellation Cygnus contains one of the most beloved double stars in the sky, blue and gold Albireo.
Jun 21, 2024 · It’s hard not to see it this way: three bright stars align to form Orion’s iconic belt, while some of the very brightest stars in the sky, including Betelgeuse and Rigel, give shape to this...
Jul 4, 2024 · Bottom line: The dog days of summer are named for the Dog Star, Sirius – the brightest star in the sky – in the constellation Canis Major the Greater Dog.
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