<span>50 to 1,000
A galaxy cluster contains anywhere from 50 to 1,000 galaxies. These are extremely large and hold millions of planets. So amazing!
I hope this helped. Have a great night!</span>
        
             
        
        
        
Answer:
The gravitational potential will change more on  earth.
Explanation:
The gravity on the moon is only 17% of that of earth's because the earth has way more mass. Since the gravitational potential depends on the mass of the human and the height of the ladder, and both things will remain equal, no matter where they are, so we could assume that the gravitational potential energy will change more on earth. 
 
        
             
        
        
        
<span>By the given data the following conclusion is best supported: The oceanographer is  is traveling toward a mid ocean ridge.
At the mid-ocean ridge network crust is created. So as the oceanographer moves toward it, it becomes progressively younger.
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It is Andromeda galactic.