What holds the Universe together?
The same force that keeps your feet on the ground holds the whole Universe together. This is the force of gravity. Gravity extends through space between planets, between stars, and between galaxies. It keeps the planet together in the Solar System and holds the stars together in huge galaxies.
the same force that……・・・（以下に述べている様な）まさに〜と同じ力が
the force of gravity・・・重力/引力 1680年代にアイザックニュートンが “Theory of Universal Gravitation” で万有引力の理論を展開し近代物理学が開花しました。
