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Q: Which is the brightest star in the sky at night?
  • A. Canopus
  • B. Sirius-A
  • C. Vega
  • D. Spica
Correct Answer: Option B - The Sirius-A or Sirus is brightest star in the sky at night. It is close to Orion constellation. Sirius is also called the Dog star. It is officially called Alpha Canis Majoris, because of its designation and position in the Constellation Canis Major. Sirius is actually a binary star system which has a luminious main sequence star, Sirius.
B. The Sirius-A or Sirus is brightest star in the sky at night. It is close to Orion constellation. Sirius is also called the Dog star. It is officially called Alpha Canis Majoris, because of its designation and position in the Constellation Canis Major. Sirius is actually a binary star system which has a luminious main sequence star, Sirius.

Explanations:

The Sirius-A or Sirus is brightest star in the sky at night. It is close to Orion constellation. Sirius is also called the Dog star. It is officially called Alpha Canis Majoris, because of its designation and position in the Constellation Canis Major. Sirius is actually a binary star system which has a luminious main sequence star, Sirius.