1.

Name the star nearest to the Earth. Why does it appear brighter and hotter than other stars ? How much time is required for light to reach the Earth from this star ? Give the composition of this star. What is the source of energy of this star ?

Answer»

  1. Name the star nearest to the Earth.

  2. Why does it appear brighter and hotter than other stars ?

  3. How much time is required for light to reach the Earth from this star ?

  4. Give the composition of this star.

  5. What is the source of energy of this star ?





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