Some dark matter may be ordinary matter that orbits in the halo of the galaxy. Which of the following would not be considered a type of ordinary dark matter?

Question

Quizplus · Accepted Answer

Globular clusters in the halo of the galaxy are not considered ordinary dark matter because they are visible through telescopes due to the light emitted or reflected by their stars, unlike dark matter which does not emit, absorb, or reflect light, making it invisible and detectable only through its gravitational effects.

Some Dark Matter May Be Ordinary Matter That Orbits in the Halo