Both black holes and neutron stars are corpses of stars that died in catastrophic explosions known as supernovas, outbursts that can make a star briefly outshine all of the other stars in its galaxy. When a star goes supernova, the core of its remains collapses under the strength of its own gravitational pull.
        
             
        
        
        
Answer:
for healthy living and long life
 
        
                    
             
        
        
        
Answer:
all of the above
Explanation:
gravity makes a planet have a combination go straight yet go around the sun at the same time creating an ellipse
sciencefocus 
 
        
             
        
        
        
In a scientific experiment, a VARIABLE changed is any factor that can change or be
        
             
        
        
        
Answer: humans would become weightless, we would be flying super fast across the earth; much like tumbleweeds. 
Explanation:
because thats how gravity works.