Author Question: The stellar spectral sequence, in order of decreasing temperature, is A) OBAFGKM. B) OFBAGKM. C) ... (Read 49 times)

jlmhmf · **on:** Jul 27, 2018

The stellar spectral sequence, in order of decreasing temperature, is

A) OBAFGKM. B) OFBAGKM. C) OBAGFKM. D) ABFGKMO. E) BAGFKMO.

Question 2

Based on current evidence, which of the following statements about gamma ray bursts is true?

A) They occur in the same types of close binary systems that produce X-ray bursts.
B) All those that we have detected occurred in distant galaxies.
C) They come primarily from the Milky Way's central black hole.
D) All gamma ray bursts are produced by supernovae.