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Alpha Centauri (the brightest star in the constellation Centaurus) is the closest star to earth, and is actually a double star system - when it's small companion star is on "our side" of Alpha C, it is actually closest. The system is about 4.3 light years away. Sirius is the brightest star in the night sky, a white giant, and is about 9 light years away.

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12y ago
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10y ago

They are stars.

Alpha Centauri is the brightest star in the southern constellation of Centaurus and the third brightest in our visible night sky.

Sirius is the brightest star in our visible night sky and is in the Canis Major constellation.

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Q: What are alpha centauri and Sirius?
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What is the nearest star other than or own?

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Why does Sirius star look brighter than alpha centauri star?

Because it actuall IS brighter.


Where is memory alpha star rek online?

In the top-right corner of the Alpha-Centauri sector, which is just above the Sirius sector.


How many Satellites does Alpha Centauri have?

Alpha Centauri is a star, it cannot have satellites. Satellites orbit planets.


Sirius is twice as far from earth as which star?

Probably one of the Alpha Centauri stars at about 4.3 light years.


What are the 3 nearest stars to OUR sun?

Proxima Centauri Alpha Centauri A Alpha Centauri B


What is the magnitude of alpha centauri a?

Alpha Centauri A has an apparent magnitude of -0.01


What does the double star Alpha Centauri A and Alpha Centauri B form with Proxima Centauri?

A star system


How long does it take Alpha Centauri to orbit the sun?

Alpha Centauri does not orbit the sun.


Does Alpha Centauri and Proxima Centauri revolve around each other?

No, Proxima Centauri and Alpha Centauri do not revolve around each other.


How big is the alpha centauri?

Alpha Centauri has a mass of 1.1 solar masses.


One of its kind is Alpha centauri?

Alpha Centauri is a multiple-star system.