What Is the Expected Future of Our Galaxy

question 34

Multiple Choice

What is the expected future of our galaxy?

• A) Its contents will eventually be pulled in by the supermassive black hole at its center, Sagittarius A*.
• B) Eventually all its matter will be in the form of iron atoms.
• C) It will eventually be made of nothing but white dwarfs, neutron stars, and black holes, and then will collapse in on itself in a Big Crunch.
• D) It will merge with nearby galaxies and then eventually decay into photons.
• E) It will expand with the universe, but will stop expanding once enough stars become black holes.

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