Orbital period of the planet Mercury around the sun is _____________?
Correct answer: A. 88 days
- A. 88 days
- B. 365 days
- C. 2 years
- D. 98 days
- E. None of these
Explanation
Mercury is the closest planet to the Sun and completes one orbit in about 88 Earth days. Its short orbital period results from its small orbit and high orbital speed.
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About Astronomy and Space
Astronomy covers the structure and motions of the solar system, planets, satellites, comets, asteroids and meteoroids, together with gravity, eclipses, seasons and phases of the Moon. It also introduces stars, galaxies, nebulae, black holes, space telescopes and satellites, while distinguishing rotation from revolution and meteors from meteorites.
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