It may have once been true, but not anymore. What goes up may not always come back down. The piece is designed as an overview of Newton's Universal Law of Gravitation. It would be perfect for a close read in either the science or literacy block. Maybe your English teacher friends are looking for some informational text, well throw this to them. :) Also, includes ELA style question. If this doesn't make your principal smile, I don't know what will.
SC.6.P.13.2 Explore the Law of Gravity by recognizing that every object exerts gravitational force on every other object and that the force depends on how much mass the objects have and how far apart they are.
SC.6.P.13.3 Investigate and describe that an unbalanced force acting on an object changes its speed, or direction of motion, or both.