Final answer:
Spiral galaxies have three main components: flat disk, bulge, and halo, with spiral arms, gas, dust, and young stars.
Explanation:
Spiral galaxies consist of three main components:
- Flat disk: Contains stars, gas, and dust, most visible in visible light.
- Bulge: Sphere-shaped collection of stars near the galaxy center.
- Halo: Larger sphere-shaped collection of stars and clusters extending beyond the disk.
Spiral galaxies, like the Milky Way, have spiral arms, lots of gas and dust, and many young stars.
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