Directions (1-5): Rearrange the following sentences (A), (B), (C), (D) and (E) in the proper sequence to form a meaningful paragraph and then answer the questions given below. 
(A) In the same manner, laws of gravity expect us to see stars closer to the centre of galaxies rotating faster than the stars on the edge. 
(B) This implied that something invisible and enveloping the galaxies was giving an extra push to the outer stars, speeding them up. 
(C) In the solar system, Mercury, the planet closest to the Sun, takes just 88 days to make one revolution around the sun, while Neptune, the farthest one, takes 165 years to make one round. 
(D) This entity has remained as one of the central unresolved puzzles in cosmology since 1930s. It is, no wonder, named `Dark Matter’. 
(E) However, in most galaxies, the stars closer to the centre and the stars at the edge of the galaxies take almost same time to make one revolution.