Everyday Science
NULL
Medium
Question
Primary cosmic rays are composed largely of very fast __________?
A
Protons
✓ Official correct answer
B
Neutrons
C
Electrons
D
Gamma rays
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
Protons
No member explanations yet for this option.
B
Neutrons
No member explanations yet for this option.
C
Electrons
No member explanations yet for this option.
D
Gamma rays
No member explanations yet for this option.
Explanation
They are mostly high-energy protons.
So the correct answer is Protons.
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