No single person “discovered” gravity, but Isaac Newton is the one who truly formulated the first universal, mathematical law of gravity in the 17th century, which is why he usually gets the credit.

Quick Scoop: Who truly discovered gravity?

1. Before Newton: People knew things fall

Long before Newton, humans obviously knew that things fall down, planets move, and tides rise and fall.

Ancient Greek thinkers like Aristotle and later scholars in the Islamic world and Renaissance Europe tried to explain why objects fall and how celestial bodies move, but they lacked a single unifying law.

Key pre‑Newton moments:

  • Aristotle: Thought heavier objects fall faster, and treated motion on Earth differently from motion in the heavens.
  • Archimedes: Worked with centers of gravity and buoyancy, giving early mathematical ideas about weight and balance.
  • Galileo (16th–17th c.): Showed that, near Earth, objects in free fall accelerate at the same rate regardless of mass, and analyzed projectile motion.
  • Kepler: Found precise mathematical laws for planetary orbits (ellipses, equal areas in equal times, and the link between orbital period and distance).

These people didn’t “discover gravity” as a universal law, but they laid crucial groundwork.

2. What Newton actually did

Newton’s leap wasn’t “noticing that things fall”; it was realizing that the same force that pulls an apple to the ground also keeps the Moon and planets in orbit, and then writing that link as a precise equation.

In his 1687 work Philosophiæ Naturalis Principia Mathematica (“Principia”), Newton:

  • Formulated the law of universal gravitation F∝m1m2r2F\propto \frac{m_1m_2}{r^2}F∝r2m1​m2​​ (often written with the constant GGG).
  • Showed that Earthly motion (falling objects, projectiles) and celestial motion (planets, moons, comets) obey the same laws.
  • Unified Galileo’s experiments and Kepler’s planetary rules into a single mathematical framework.

That unification is why historians say Newton “discovered” gravity in the scientific sense: he turned scattered observations into a universal law with predictive power.

3. So who truly discovered gravity?

You can look at it from a few angles:

  1. Everyday awareness:
    • Humans have always known things fall; no single discoverer here.
  2. First serious investigations:
    • Figures like Aristotle, Archimedes, medieval and early modern scholars, Galileo, and Kepler all chipped away at the problem of motion and attraction.
  1. First universal law:
    • Newton is the one who truly discovered gravity as a universal, quantitative law , which is what modern science usually means by “discovered gravity.”
  1. Refinement and correction:
    • In the 20th century, Einstein showed that Newton’s law is an approximation and re‑described gravity as the curvature of spacetime in general relativity, but even this built on Newton’s foundations.

A fair statement is:

People noticed gravity for as long as humans have existed, many thinkers contributed pieces, but Isaac Newton was the first to formulate a universal mathematical law of gravitation.

4. Mini timeline (fast view)

  • Ancient world: Qualitative ideas about heaviness and falling, no single law.
  • 16th–17th c.: Galileo and Kepler quantify motion and orbits.
  • 1687: Newton publishes the Principia and the law of universal gravitation (the key “discovery of gravity” moment in science history).
  • Early 1900s: Einstein’s relativity refines the picture of gravity as spacetime curvature, not just a force.

5. Simple story version

If you want a short, story‑like way to phrase it:

Lots of people saw apples fall, but Newton asked, “Is the force pulling this apple down the same as the one holding the Moon up there?”
When he answered yes and wrote it as a single law that worked for both apples and planets, that is when gravity was truly “discovered” as scientists mean it today.

TL;DR:

  • Many thinkers slowly uncovered how things fall and how planets move.
  • Isaac Newton is credited with truly discovering gravity because he was first to express it as a universal, predictive law applying everywhere in the universe.

Information gathered from public forums or data available on the internet and portrayed here.