Multiple Choice
What are cosmic rays?
A) subatomic particles that travel close to the speed of light
B) gamma rays and X-rays
C) fast-moving dust particles in the interstellar medium
D) any light waves from space
E) lasers used as weapons by extraterrestrials
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q77: Compared with stars in the disk,orbits of
Q78: The primary way that we observe the
Q79: What is a shock front?<br>A)a wave of
Q80: How can we see through the interstellar
Q81: The Sun is located at the edge
Q83: If you were to take a voyage
Q84: Shapley used the distribution of globular clusters
Q85: What do we call the bright,sphere-shaped region
Q86: Where does most star formation occur in
Q87: What is an ionization nebula?<br>A)a region of