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The distinction between the halo and the main body of the galaxy is clearest in spiral galaxies, where the spherical shape of the halo contrasts with the flat disc. In an elliptical galaxy, there is no sharp transition between the body of the galaxy and the halo.
- Slater, Sara (16 September 2015). "What is our galaxy's halo made of, and how was it formed? (Intermediate)". curious.astro.cornell.edu. Cornell University. Retrieved 3 October 2017.