Answer :
The correct hierarchy would be
-A solar system is a collection of planets, their moons, and other objects in orbit around a central star.
-A galaxy refers to all existing matter, energy, and space that is held together by gravity
-A solar system is a collection of planets, their moons, and other objects in orbit around a central star.
-A galaxy refers to all existing matter, energy, and space that is held together by gravity
Answer:
A solar system refers to all existing matter, energy, and space that is held together by gravity.
Explanation: