Author Question: Evidence gathered from observations of exoplanets indicates approximately what percentage of stars ... (Read 32 times)

B · **on:** Jul 27, 2018

Evidence gathered from observations of exoplanets indicates approximately what percentage of stars have planets?

A) 0
B) 1
C) 10
D) 100
E) It is not yet possible to make an estimate.

Question 2

Quasar's spectral lines are:

A) emission lines with large redshifts.
B) a continuum from the synchrotron radiation.
C) fuzzy absorption lines from the merged light of the billions of stars.
D) too complex for any interpretation.
E) nonexistent, the gas so hot as to be totally ionized, so no lines are seen.