What are cosmic rays?
A)another name for gamma rays and X-rays
B)fast moving dust particles in the interstellar medium
C)subatomic particles that travel close to the speed of light
D)lasers used as weapons by extraterrestrials

Question

Quizplus · Accepted Answer

Cosmic rays are subatomic particles that travel close to the speed of light. They originate from outer space and can include protons, helium nuclei, and other atomic nuclei. They can also interact with the Earth's atmosphere, producing secondary particles like muons and electrons.

Option A is incorrect because cosmic rays are not the same as gamma rays and X-rays, although they are all forms of radiation. Option B is incorrect because cosmic rays are not dust particles but rather high-energy particles. Option D is incorrect because lasers are not a type of cosmic ray and there is no evidence that extraterrestrials use them as weapons.

What Are Cosmic Rays