Why Can't Dark Matter Halos Collapse to Be the Same

question 13

Multiple Choice

Why can't dark matter halos collapse to be the same size as the visible parts of galaxies?

• A) Dark matter can't dissipate its energy through collisions.
• B) Dark matter is mostly made of mini-black holes.
• C) Dark matter has much more angular momentum.
• D) Dark matter annihilates when it begins to get that dense.

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Definitions:

Idea Killers

Factors or attitudes that hinder the development or acceptance of new ideas.

Generating Ideas

The process of brainstorming and coming up with new and creative concepts or solutions.

Nominal Group

A technique in group decision making in which individual members meet face-to-face to pool their judgments in a systematic but independent fashion.

Round Robin

A method often used in meetings for collecting ideas or making decisions, where participants contribute one at a time in a circulation order.