An Astronomer Studying a Particular Object in Space Finds That

Multiple Choice

An astronomer studying a particular object in space finds that the object emits light only in specific,narrow emission lines.The correct conclusion is that this object

A) cannot consist of gases but must be a solid object.
B) is made up of a hot,dense gas surrounded by a rarefied gas.
C) is made up of a hot,dense gas.
D) is made up of a hot,low-density gas.