Quasars ______. a. are common at all ages of the Universe b. are an early stage

Question

Quasars ______. a. are common at all ages of the Universe b. are an early stage of the formation of common galaxies c. disrupt galactic formation and become isolated black holes d. are the early stages of what become Seyfert galaxies e. are formed from double-lobed radio galaxies If the density of normal matter today is 4 times 10^-31 kg/liter, what would be the density at the time of z = 1000? 4 times 10^-34 kg/liter 3 times 10^-31 kg/liter 4 times 10^-22 kg/liter 3 times 10^-28 kg/liter Active galaxies were first discovered by observations in the _______ wavelength band. Hubble's law states that the universe has no center. True False

Explanation / Answer

Q-9:

Ans.

b. are an early stage of the formation of common galaxies

Explanation:

Q.11

Ans.

Active galaxies were first discovered by observations in the radio wavelength band.

Explanation:

Q-12

Ans.

False

Explanation:

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