A Typical Globular Cluster Is Composed of 500,000 Stars in a Sphere

question 51

Essay

A typical globular cluster is composed of 500,000 stars in a sphere whose radius is approximately 5 pc. The distance between stars in a globular cluster is given approximately by d $\approx$ r/N^1/3, where r is the radius and N is the number of stars in the cluster. Calculate this distance, and determine how many times smaller it is than the typical distance between stars in the solar neighborhood, which is 3 light-years.

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Definitions:

National Pollutant

A substance that contaminates the environment on a national scale, often regulated by government agencies due to its harmful effects.

Discharge Permits

Authorizations issued by environmental regulatory agencies allowing the release of specific pollutants into the environment, under defined conditions.

EPA

The Environmental Protection Agency is a U.S. federal agency tasked with protecting human health and the environment through regulations and enforcement.

Montreal Protocol

An international treaty designed to protect the ozone layer by phasing out the production of numerous substances responsible for ozone depletion.