Multiple choice general knowledge science & technology

Sky dog 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's a binary star system about 8.6 light-years away, making it one of Earth's nearest stellar neighbors. Its brightness and visibility in the winter sky of the Northern Hemisphere earned it the nickname 'Dog Star' from its constellation Canis Major.

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