Multiple choice

Which of the following celestial bodies contains abundant quantities of helium-3, a potential source of energy?

  1. Earth

  2. Moon

  3. Venus

  4. Saturn
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Helium-3 is deposited in abundant quantities on the lunar surface by solar wind, making the Moon a major potential future energy source for nuclear fusion. Earth, Venus, and Saturn do not feature easily accessible deposits of this isotope.

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