The hydrogen in an HII region is
A) In molecular form
B) Very cool
C) Ionized
D) In liquid form
Correct Answer:
Verified
Q5: The distance to the center of our
Q6: We cannot see the other side of
Q7: What property of globular clusters made it
Q8: Interstellar dust grains produce
A)Radio emission at a
Q9: The 21 cm line is emitted by
A)Hydrogen
Q11: Why are HII regions red in color?
A)They
Q12: What kind of object creates an evacuated,very
Q13: What assumption about globular clusters did Harlow
Q14: What effect do interstellar dust particles have
Q15: The bluish color of the nebulosity around
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents