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Gravity is a physical phenomenon which is obvious all around us.
As such, it's begging for a scientific theory to describe it accurately and consistently. The rules within a theory are called "laws" and the inverse square law of the Newtonian theory of gravitation does describe gravity extremely well. Loosely stated:
"Two things always attract in direct proportion of their masses and in inverse proportion of the square of the distance between them."
However, the Newtonian theory does not provide the ultimate law for gravity. We do know that General Relativity (GR) provides more accurate experimental predictions in extreme conditions (e.g., a residual discrepancy in the motion of the perihelion of Mercury is not explained by Newtonian theory but is accounted for by GR).
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Thanks, Trump for the civics lesson. We are learning so much about RICO, espionage, sedition, impeachment, the 25th Amendment, order of succession, nepotism, separation of powers, 1st Amendment, obstruction of justice, the emoluments clause, conflicts of interest, collusion, sanctions, oligarchs, money laundering and so much more.
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