Multiple choice

In which of the following planets would you find the 'sea of tranquillity?

  1. Earth

  2. Venus

  3. Mars

  4. Moon
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The Sea of Tranquility (Mare Tranquillitatis) is a lunar mare on the surface of the Moon. It was the landing site of Apollo 11 in 1969, where humans first set foot on the Moon.

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