Given the task definition, example input & output, solve the new input case.
In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Example: The Inheritance Cycle is a series of fantasy books written by Christopher Paolini.
Output: The Inheritance Cycle is a tetralogy of young adult high fantasy novels written by American author Christopher Paolini.
The output sentence elaborates on the input sentence without changing its general meaning e.g. "tetralogy of young adult high fantasy novels".

New input case for you: Those in the halo contain many more stars and are much older than the less dense open clusters in the disk .
Output:
Globular clusters are found in the halo of a galaxy and contain considerably more stars , and are much older , than the less dense , open clusters which are found in the disk of a galaxy .