The visual pink glow of the Great Nebula in Orion
A) is a Herbig-Haro object.
B) is a reflection nebula of dust.
C) is an emission nebula of thin gas.
D) contains only young low mass stars.
E) is believed to be about 5 billion years old.
Correct Answer:
Verified
Q1: _ are small luminous nebulae excited by
Q2: _ is the thermonuclear fusion of hydrogen
Q4: Which of the following is NOT evidence
Q5: The lower edge of the main-sequence band
Q6: What causes the outward gas pressure that
Q7: _ are star-like objects that contain less
Q8: Opacity is
A)the balance between the pressure and
Q9: _ occurs when most of the material
Q10: There is a main-sequence mass-luminosity relation because
A)helium
Q11: Due to the dust in the interstellar
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