Ultra-High-Energy Cosmic Rays and Their Origin

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Question 1 of 14

What is the approximate energy range of Ultra-High-Energy Cosmic Rays (UHECRs)?

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10^12 eV to 10^15 eV

10^15 eV to 10^19 eV

10^19 eV to 10^23 eV

10^23 eV and above

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