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The 61 pages that link to Dark matter halo, each with the reason it gives.

• Milky WayBroader topic: The Milky Way’s outer rotation requires far more gravitating mass than its stars and gas provide.

• Spiral galaxyBroader topic: It helps explain the high orbital speeds measured far from spiral-galaxy centers.

• Weak gravitational lensingBroader topic: Weak lensing measures halo mass without requiring the dark matter to emit light.

• Galaxy formation and evolutionBroader topic: Gas falls into these halos, setting the mass scales for galaxy growth.

• Hierarchical structure formationBroader topic: Halos are the main units that grow, merge, and host galaxies.

• Cold dark matterBroader topic: Cold dark matter collects into halos that provide gravitational scaffolding for galaxies.

• Missing satellites problemBroader topic: The predicted satellites are low-mass halos, not necessarily luminous galaxies.

• Galactic haloBroader topic: It supplies most of the halo’s mass and shapes the galaxy’s gravitational environment.

• Virgo SuperclusterBroader topic: Halos supply much of the gravitational mass shaping motions within its component systems.

• Galaxy rotation problemBroader topic: An extended halo supplies the extra gravitational pull used to explain flat rotation curves.