Author Question: Contrast the sizes of molecular clouds with emission nebulae. What will be an ideal ... (Read 71 times)

roselinechinyere27m · **on:** Jul 27, 2018

Contrast the sizes of molecular clouds with emission nebulae.

What will be an ideal response?

Question 2

In structure, our Milky Way is most similar to:

A) the Large Magellanic Cloud.
B) an upscale version of a globular cluster.
C) M-31, the Andromeda Galaxy.
D) the Orion nebula.
E) None of these.

kmb352 · **Reply #1 on:** Jul 27, 2018

Answer to Question 1

The emission nebula are only a few light years across, limited to those regions made hot enough to glow visibly by OB associations like the Orion Nebula. The giant molecular clouds are often hundreds of light years across, vast cold star forming regions that only occasionally are lit up enough to show hot spots like M-42 or other emission nebula, which are the tips of these cosmic icebergs.

Answer to Question 2

C