Question

question 12
1 pts
what morphology is the milky way galaxy?
elliptical
spiral
lenticular
irregular
question 13
1 pts
what is a quasar?
a galaxy with an unusually low rate of star formation.
a highly luminosity object in the center of a galaxy.
another name for the singularity of a black hole.
the result of two large elliptical galaxies merging together.
question 14
1 pts
what are active galactic nuclei?
the center of open galaxy clusters which produce several stars per year.
stellar-mass black holes that are found in binary system emitting only x-ray light.
centers of galaxies that emit large amounts of light and are believe black holes.
galaxies that have evidence of active lifeforms, similar to earths dinosaurs.

Explanation:

• Question 12: The Milky Way has a spiral structure with a central bulge, disk, and spiral arms.
• Question 13: Quasars are extremely luminous objects powered by supermassive black holes at galaxy centers.
• Question 14: Active galactic nuclei are bright galaxy centers, typically fueled by accreting supermassive black holes.

Answer:

Question 12: Spiral
Question 13: A highly luminosity object in the center of a galaxy.
Question 14: Centers of galaxies that emit large amounts of light and are believe black holes.

(Note: The last option for Question 14 appears truncated but is the correct description of active galactic nuclei.)