How much do you know about the Andromeda Galaxy?

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Questions and Answers

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?

  • 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?

  • 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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