Author Question: Which stellar spectral type has strong molecular absorption lines in its optical spectrum? A) M ... (Read 54 times)

karlynnae · **on:** Jul 27, 2018

Which stellar spectral type has strong molecular absorption lines in its optical spectrum?

A) M B) G C) K D) O E) B

Question 2

The Metonic cycle is the

A) 18-year, 11-day period over which the pattern of eclipses repeats.
B) period between successive Easters.
C) 12-month period of a lunar calendar.
D) 19-year period over which the lunar phases occur on about the same dates.
E) 29 1/2-day period of the lunar cycle.