Dark Matter

Q17: Primary cosmic rays are produced<br>A) in the

Q18: Emissions of various kinds from near the

Q19: Communications with planets outside the solar system

Q20: The individual stars we can see with

Q21: Globular clusters of stars<br>A) are uniformly distributed

Q23: Primary cosmic rays consist of<br>A) atomic nuclei,

Q24: The stars in globular clusters<br>A) are relatively

Q25: Immediately after the big bang, the universe

Q26: Interstellar space in our galaxy<br>A) is completely

Q27: The galaxies in the universe are distributed<br>A)