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1. What's the brightest star in the night sky?

Sirius is the brightest star in the night sky. With a visual apparent magnitude of -1.46, it is one of the few stars visible to the naked eye even for city-dwellers. It is also known as the "Dog Star" because it is found in Canis Major, the Big Dog.

Sirius is the brightest star in the night sky. With a visual apparent magnitude of -1.46, it is one of the few stars visible to the naked eye even for city-dwellers. It is also known as the "Dog Star" because it is found in Canis Major, the Big Dog.

Sirius is the brightest star in the night sky. With a visual apparent magnitude of -1.46, it is one of the few stars visible to the naked eye even for city-dwellers. It is also known as the "Dog Star" because it is found in Canis Major, the Big Dog.

Sirius is the brightest star in the night sky. With a visual apparent magnitude of -1.46, it is one of the few stars visible to the naked eye even for city-dwellers. It is also known as the "Dog Star" because it is found in Canis Major, the Big Dog.

NASA/Reuters/File
(Read caption)

Sirius (in Canis Major)

 

Rigel (Orion's knee)

 

Betelgeuse (Orion's shoulder)

 

Polaris (The North Star)

 
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