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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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13y ago
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1mo ago

Alpha Centauri is the closest star system to the Sun, consisting of three stars - Alpha Centauri A, Alpha Centauri B, and Proxima Centauri. Sirius is the brightest star in the night sky and is located in the constellation Canis Major. It is a binary star system, composed of Sirius A and Sirius B.

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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?

Proxima Centauri, which is probably part of the Toliman (Alpha Centauri) system.Proxima Centauri, which is probably part of the Toliman (Alpha Centauri) system.Proxima Centauri, which is probably part of the Toliman (Alpha Centauri) system.Proxima Centauri, which is probably part of the Toliman (Alpha Centauri) system.


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.


Sirius is twice as far from earth as which star?

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


How many Satellites does Alpha Centauri have?

As of current knowledge, there are no known satellites orbiting Alpha Centauri, which is our closest neighboring star system. However, further exploration may potentially discover any satellites that might exist.


What is the nerrest star to earth?

The nearest star to Earth is Proxima Centauri, which is part of the Alpha Centauri star system. Proxima Centauri is located approximately 4.24 light years away from Earth.


What are the 3 nearest stars to OUR sun?

The three nearest stars to our Sun are Proxima Centauri, Alpha Centauri A, and Alpha Centauri B. They are part of the Alpha Centauri star system, located about 4.37 light years away from us.


What is the magnitude of alpha centauri a?

Alpha Centauri A has an apparent magnitude of -0.01


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 the closest star system to Earth, located about 4.37 light-years away in the constellation of Centaurus. It consists of three stars: Alpha Centauri A, Alpha Centauri B, and Proxima Centauri. Proxima Centauri is the closest known star to the Sun.