The Milky Way and Other Galaxies MCQs

1. What type of galaxy is the Milky Way?
(A) Elliptical galaxy
(B) Irregular galaxy
(C) Spiral galaxy
(D) Lenticular galaxy

2. Which part of the Milky Way galaxy contains the highest concentration of stars?
(A) The central bulge
(B) The halo
(C) The spiral arms
(D) The outer rim

3. How many galaxies are estimated to be in the observable universe?
(A) Less than 100 million
(B) About 100 billion
(C) About 1 trillion
(D) 10 million

4. What is the name of the closest galaxy to the Milky Way?
(A) Andromeda Galaxy
(B) Triangulum Galaxy
(C) Whirlpool Galaxy
(D) Messier 87

5. What is the term for the massive black hole believed to exist at the center of the Milky Way?
(A) Sagittarius A*
(B) Cygnus X-1
(C) Andromeda A
(D) Hydra A

6. Which galaxy is considered the largest in the Local Group of galaxies?
(A) The Milky Way
(B) The Andromeda Galaxy
(C) The Triangulum Galaxy
(D) The Sombrero Galaxy

7. What is the primary component of the Milky Way’s halo?
(A) Dust clouds
(B) Gas nebulae
(C) Old stars and globular clusters
(D) Dark matter

8. Which type of galaxy is characterized by a lack of distinct structure, often containing older stars?
(A) Spiral galaxy
(B) Elliptical galaxy
(C) Irregular galaxy
(D) Lenticular galaxy

9. How far is the Andromeda Galaxy from the Milky Way?
(A) About 100,000 light-years
(B) About 2.5 million light-years
(C) About 500,000 light-years
(D) About 5 million light-years

10. What will happen when the Milky Way and Andromeda galaxies collide?
(A) Both galaxies will disappear
(B) A new galaxy will form
(C) The Earth will be destroyed
(D) The Milky Way will absorb Andromeda without any change