Multiple choice

Indian astronomers were aware of

  1. the distances between planets.

  2. other solar systems.

  3. the fact that the sun is a star.

  4. inoculation techniques.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ancient Indian astronomers made remarkable discoveries, including the realization that the Earth is a sphere rotating on its axis and that the sun is a star. Inoculation is a medical technique, not an astronomical one, and they did not have the technology to measure other solar systems or precise interplanetary distances.

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