newton

Kepler's three laws explained with NASA data: why orbits are ellipses, why planets speed up near the Sun, and how P² = a³ weighs planets and finds exoplanets.

Gravity explained: Newton's universal law, Einstein's curved spacetime, gravitational waves, and why GPS satellites must correct for it.

In 144 years, European thinkers traded inherited doctrine for measurement, experiment, and proof, and built the method science still runs on.

In 1666, Isaac Newton used prisms to split white sunlight into its component colors and recombined them into white again. The experiments changed how we think about light and color.