Multiple choice general knowledge science & technology

What is special about Sirius, the Dog Star?

  1. It is the only star first observed by Albert Einstein

  2. It is the brightest star in the night sky

  3. It always lies directly above the North Pole

  4. It emits staccato barking sounds which radio telescopes can detect
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sirius (Alpha Canis Majoris) is the brightest star in the night sky with an apparent magnitude of -1.46. It is not the only star observed by Einstein, does not stay above the North Pole (that's Polaris), and does not emit actual barking sounds. The 'Dog Star' name comes from its position in the constellation Canis Major.

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