Multiple choice

Which of the following planet/s has had no moons? I. Mercury II. Venus III. Mars IV. Uranus

  1. I & II

  2. II & III

  3. III & IV

  4. I & IV
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mercury and Venus are the only two recognized planets in our solar system without moons. However, there are many, many- possibly an infinite number- of planets in the universe and a significant portion of these, if our solar system is assumed representative of at least a significant portion of the universe's planetary systems, have no moons.

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