16. What is the name of the galaxy that collided with the Milky Way in the past and is currently merging with it?
17. Which galaxy is famous for its prominent ring of bright, young stars surrounding its core?
18. What is a dwarf galaxy?
19. What is the name of the galaxy that contains the supermassive black hole photographed by the Event Horizon Telescope?
20. What is the estimated age of the Milky Way Galaxy?
21. What is the primary source of energy that powers most galaxies?
22. Which galaxy is often referred to as the "Cigar Galaxy" due to its elongated shape?
23. What is the name of the galaxy that contains the Milky Way's nearest neighbor, the Canis Major Dwarf Galaxy?
24. What is the Hubble sequence?
25. What is the name of the galaxy that contains the Great Attractor, a region of mass that influences the motion of galaxies in its vicinity?
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