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Questions and Answers
What is the Andromeda Galaxy?
What is the Andromeda Galaxy?
- An irregular galaxy
- A dwarf galaxy
- A spiral galaxy (correct)
- A elliptical galaxy
What is the distance between the Andromeda Galaxy and Earth?
What is the distance between the Andromeda Galaxy and Earth?
- 2.5 billion light-years
- 2.5 million kilometers
- 2.5 million light-years (correct)
- 2.5 billion kilometers
What is the expected result of the collision between the Milky Way and the Andromeda Galaxy?
What is the expected result of the collision between the Milky Way and the Andromeda Galaxy?
- The destruction of both galaxies
- The formation of a giant elliptical or lenticular galaxy (correct)
- The formation of a new spiral galaxy
- The separation of both galaxies
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Study Notes
- The Andromeda Galaxy is a barred spiral galaxy.
- It is approximately 2.5 million light-years away from Earth.
- It is the nearest large galaxy to the Milky Way.
- The galaxy's name comes from the constellation of Andromeda.
- The Andromeda Galaxy has a diameter of 46.56 kpc.
- Its virial mass is 1 trillion solar masses.
- The mass of the Milky Way and Andromeda are difficult to estimate.
- The two galaxies are expected to collide in 4-5 billion years.
- The collision may form a giant elliptical or lenticular galaxy.
- The Andromeda Galaxy is visible to the naked eye from Earth.
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