Galaxies, part 2

The video explores the vastness of galaxies, starting with their types and classifications. It delves into the discovery of quasars, revealing them as highly luminous galaxies powered by supermassive black holes. The video explains how these black holes, through accretion disks, emit immense energy, making active galaxies visible across the universe. It discusses the future collision between the Milky Way and Andromeda, forming a new galaxy. The structure of galaxy clusters and superclusters is examined, highlighting the interconnectedness of the universe. Finally, the Hubble Deep Field is introduced, showcasing the universe's immense scale and the countless galaxies within it.

What are the different classifications of galaxies based on their shape?

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What is a quasar and how was it discovered?

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What role do supermassive black holes play in the formation of active galaxies?

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What happens to the material that falls into a black hole?

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How do active galaxies emit energy?

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How do galaxies tend to group together in the universe?

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What are superclusters and how do they relate to galaxy clusters?

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What are some of the biggest questions about the universe that remain unanswered?

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What is the significance of the Hubble Deep Field in understanding the number of galaxies?

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What is the fate of the Milky Way and Andromeda galaxies in the future?

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