Recently, some engineers and scientists have proposed building spaceships with enormous sails that catch the solar wind and use it to move the ship. What kinds of particles would be hitting this sail to enable the propulsion?

Recently, some engineers and scientists have proposed building spaceships with enormous sails that catch the solar wind and use it to move the ship. What kinds of particles would be hitting this sail to enable the propulsion?



A) Nuclei of heavier atoms such as iron and nickel
B) Calcium atoms
C) Electrons and protons
D) Gamma-rays
E) Photons




Answer: C


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