The Milky Way and other galaxies
A galaxy is an enormous, gravitationally bound collection of stars, gas, dust, and dark matter, typically containing anywhere from millions to trillions of stars; our own solar system is located in one spiral arm of the Milky Way galaxy, which itself is just one of hundreds of billions of galaxies in the observable universe.
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This midterm covers a lot of topics, so it's split into 2 parts. Each part includes a question from every one of its topics.
Midterm, Part 1 of 2
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Midterm, Part 2 of 2
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This final covers a lot of topics, so it's split into 3 parts. Each part includes a question from every one of its topics.
Final, Part 1 of 3
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Final, Part 2 of 3
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Final, Part 3 of 3
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