Question

albert einstein didnt mean to turn the universe upside - down on everyone. he didnt plan on leading others to discover black holes. at first, all he set out to do was think about motion, along with a few other related ideas. but almost before he knew it, he had suddenly made our dependable old universe seem strange and new. einsteins spacey ideas before einstein, everyone pretty much thought of space as a sort of blank nothingness that separated objects like planets, solar systems, stars, and galaxies. this nothingness of space was a humongous, rigid background, with all of the matter in the universe arranged on it like pieces on a game board. newtons force of gravity ruled this game, pulling things closer together and making them move against the spacey backdrop of nothingness. which sentence best summarizes the excerpt? albert einstein was a radical smarty - pants and somebody who had a wild imagination. albert einstein accidentally changed peoples understanding of the universe with his ideas about gravity. black holes were discovered by scientists who were so busy they forgot to eat lunch. it is lucky that albert einstein thought about gravity, or scientists would not have discovered black holes.

Explanation:

The text emphasizes that Einstein didn't intend to revolutionize the understanding of the universe but his ideas about motion and related concepts ended up doing so. The key - point is the accidental nature of his changing people's view of the universe.

Answer:

Albert Einstein accidentally changed people's understanding of the universe with his ideas about gravity.